Make sure Steam is not running and add the following line to "~/.steam/steam/config/config.vdf" under the "cip" part or replace your already existing "CS" part.

Fix Steam Linux "content servers unreachable" and Steam cloud errors

"CS"        "valve1000.steamcontent.com;valve1000.steampipe.steamcontent.com;valve1001.steamcontent.com;valve1001.steampipe.steamcontent.com;valve1002.steamcontent.com;valve1002.steampipe.steamcontent.com;valve1003.steamcontent.com;valve1003.steampipe.steamcontent.com;valve1004.steamcontent.com;valve1004.steampipe.steamcontent.com;valve1005.steampipe.steamcontent.com;valve1006.steamcontent.com;valve1006.steampipe.steamcontent.com;valve1007.steamcontent.com;valve1007.steampipe.steamcontent.com;valve1008.steamcontent.com;valve1008.steampipe.steamcontent.com;valve1009.steamcontent.com;valve1009.steampipe.steamcontent.com;valve1010.steamcontent.com;valve1010.steampipe.steamcontent.com;valve1011.steamcontent.com;valve1011.steampipe.steamcontent.com;valve1100.steamcontent.com;valve1100.steampipe.steamcontent.com;valve1101.steamcontent.com;valve1101.steampipe.steamcontent.com;valve1102.steamcontent.com;valve1102.steampipe.steamcontent.com;valve1103.steamcontent.com;valve1103.steampipe.steamcontent.com;valve1200.steamcontent.com;valve1200.steampipe.steamcontent.com;valve1201.steamcontent.com;valve1201.steampipe.steamcontent.com;valve1202.steamcontent.com;valve1202.steampipe.steamcontent.com;valve1203.steamcontent.com;valve1203.steampipe.steamcontent.com;valve1204.steamcontent.com;valve1204.steampipe.steamcontent.com;valve1205.steamcontent.com;valve1205.steampipe.steamcontent.com;valve1206.steampipe.steamcontent.com;valve1207.steamcontent.com;valve1207.steampipe.steamcontent.com;valve1208.steamcontent.com;valve1209.steamcontent.com;valve1210.steamcontent.com;valve1211.steamcontent.com;valve1212.steamcontent.com;valve1300.steamcontent.com;valve1301.steamcontent.com;valve1302.steamcontent.com;valve1302.steampipe.steamcontent.com;valve1303.steamcontent.com;valve1304.steamcontent.com;valve1306.steamcontent.com;valve1400.steamcontent.com;valve1400.steampipe.steamcontent.com;valve1401.steamcontent.com;valve1401.steampipe.steamcontent.com;valve1402.steamcontent.com;valve1402.steampipe.steamcontent.com;valve1403.steamcontent.com;valve1403.steampipe.steamcontent.com;valve1499.steamcontent.com;valve1499.steampipe.steamcontent.com;valve1500.steamcontent.com;valve1500.steampipe.steamcontent.com;valve1501.steamcontent.com;valve1501.steampipe.steamcontent.com;valve1502.steamcontent.com;valve1502.steampipe.steamcontent.com;valve1503.steamcontent.com;valve1503.steampipe.steamcontent.com;valve1600.steamcontent.com;valve1600.steampipe.steamcontent.com;valve1601.steamcontent.com;valve1601.steampipe.steamcontent.com;valve1602.steamcontent.com;valve1602.steampipe.steamcontent.com;valve1603.steamcontent.com;valve1603.steampipe.steamcontent.com;valve1604.steamcontent.com;valve1604.steampipe.steamcontent.com;valve1605.steamcontent.com;valve1606.steampipe.steamcontent.com;valve1607.steampipe.steamcontent.com;valve1608.steampipe.steamcontent.com;valve1609.steampipe.steamcontent.com;valve1610.steamcontent.com;valve1611.steamcontent.com;valve1611.steampipe.steamcontent.com;valve1612.steamcontent.com;valve1612.steampipe.steamcontent.com;valve1613.steamcontent.com;valve1613.steampipe.steamcontent.com;valve1614.steamcontent.com;valve1614.steampipe.steamcontent.com;valve1615.steampipe.steamcontent.com;valve1616.steamcontent.com;valve1616.steampipe.steamcontent.com;valve1617.steampipe.steamcontent.com;valve1618.steampipe.steamcontent.com;valve1619.steamcontent.com;valve1619.steampipe.steamcontent.com;valve164.broadcast.steamcontent.com;valve165.broadcast.steamcontent.com;valve165.steamcontent.com;valve167.steamcontent.com;valve167.steampipe.steamcontent.com;valve168.steamcontent.com;valve168.steampipe.steamcontent.com;valve169.steamcontent.com;valve169.steampipe.steamcontent.com;valve1700.steamcontent.com;valve1700.steampipe.steamcontent.com;valve1701.steamcontent.com;valve1701.steampipe.steamcontent.com;valve171.steampipe.steamcontent.com;valve172.steamcontent.com;valve172.steampipe.steamcontent.com;valve176.steamcontent.com;valve176.steampipe.steamcontent.com;valve177.steamcontent.com;valve177.steampipe.steamcontent.com;valve178.steamcontent.com;valve178.steampipe.steamcontent.com;valve179.steamcontent.com;valve179.steampipe.steamcontent.com;valve1800.broadcast.steamcontent.com;valve1800.steamcontent.com;valve1800.steampipe.steamcontent.com;valve1801.steamcontent.com;valve1801.steampipe.steamcontent.com;valve1900.steamcontent.com;valve1900.steampipe.steamcontent.com;valve1901.steamcontent.com;valve1901.steampipe.steamcontent.com;valve1902.steamcontent.com;valve1905.steamcontent.com;valve2000.steamcontent.com;valve2001.steamcontent.com;valve2002.steamcontent.com;valve2003.steamcontent.com;valve2004.steamcontent.com;valve2100.steamcontent.com;valve2101.steamcontent.com;valve2102.steamcontent.com;valve2103.steamcontent.com;valve2105.steampipe.steamcontent.com;valve210.steamcontent.com;valve2200.steamcontent.com;valve2200.steampipe.steamcontent.com;valve2201.steamcontent.com;valve2201.steampipe.steamcontent.com;valve2300.steamcontent.com;valve2301.steamcontent.com;valve2302.steamcontent.com;valve2302.steampipe.steamcontent.com;valve2303.steamcontent.com;valve2305.steamcontent.com;valve2306.steamcontent.com;valve2307.steamcontent.com;valve2309.steamcontent.com;valve236.steampipe.steamcontent.com;valve2400.steamcontent.com;valve2401.steamcontent.com;valve2500.steamcontent.com;valve2501.steamcontent.com;valve2502.steamcontent.com;valve2503.steamcontent.com;valve278.steampipe.steamcontent.com;valve280.steamcontent.com;valve280.steampipe.steamcontent.com;valve281.steamcontent.com;valve281.steampipe.steamcontent.com;valve282.steamcontent.com;valve283.steamcontent.com;valve283.steampipe.steamcontent.com;valve284.steamcontent.com;valve284.steampipe.steamcontent.com;valve285.steampipe.steamcontent.com;valve286.steampipe.steamcontent.com;valve290.steamcontent.com;valve291.steamcontent.com;valve291.steampipe.steamcontent.com;valve292.steamcontent.com;valve2.steamcontent.com;valve300.steamcontent.com;valve300.steampipe.steamcontent.com;valve301.steamcontent.com;valve301.steampipe.steamcontent.com;valve302.steamcontent.com;valve302.steampipe.steamcontent.com;valve303.steamcontent.com;valve303.steampipe.steamcontent.com;valve304.steampipe.steamcontent.com;valve305.steampipe.steamcontent.com;valve306.steamcontent.com;valve306.steampipe.steamcontent.com;valve307.steamcontent.com;valve307.steampipe.steamcontent.com;valve308.steampipe.steamcontent.com;valve309.steamcontent.com;valve309.steampipe.steamcontent.com;valve310.steamcontent.com;valve310.steampipe.steamcontent.com;valve311.steamcontent.com;valve311.steampipe.steamcontent.com;valve312.steamcontent.com;valve312.steampipe.steamcontent.com;valve313.steamcontent.com;valve313.steampipe.steamcontent.com;valve314.steamcontent.com;valve315.steamcontent.com;valve315.steampipe.steamcontent.com;valve316.steamcontent.com;valve316.steampipe.steamcontent.com;valve317.steamcontent.com;valve317.steampipe.steamcontent.com;valve318.steamcontent.com;valve318.steampipe.steamcontent.com;valve319.steamcontent.com;valve319.steampipe.steamcontent.com;valve320.steamcontent.com;valve320.steampipe.steamcontent.com;valve321.steamcontent.com;valve321.steampipe.steamcontent.com;valve322.steamcontent.com;valve325.steamcontent.com;valve327.steamcontent.com;valve400.steamcontent.com;valve400.steampipe.steamcontent.com;valve401.steamcontent.com;valve401.steampipe.steamcontent.com;valve402.steamcontent.com;valve402.steampipe.steamcontent.com;valve403.steamcontent.com;valve403.steampipe.steamcontent.com;valve404.steamcontent.com;valve404.steampipe.steamcontent.com;valve405.steamcontent.com;valve405.steampipe.steamcontent.com;valve406.steamcontent.com;valve406.steampipe.steamcontent.com;valve407.steampipe.steamcontent.com;valve409.steamcontent.com;valve409.steampipe.steamcontent.com;valve40.steamcontent.com;valve411.steamcontent.com;valve411.steampipe.steamcontent.com;valve412.steamcontent.com;valve412.steampipe.steamcontent.com;valve413.steampipe.steamcontent.com;valve414.steampipe.steamcontent.com;valve415.steamcontent.com;valve415.steampipe.steamcontent.com;valve416.steamcontent.com;valve416.steampipe.steamcontent.com;valve417.steamcontent.com;valve417.steampipe.steamcontent.com;valve418.steamcontent.com;valve419.steampipe.steamcontent.com;valve420.steamcontent.com;valve420.steampipe.steamcontent.com;valve421.steamcontent.com;valve421.steampipe.steamcontent.com;valve422.steamcontent.com;valve422.steampipe.steamcontent.com;valve423.steamcontent.com;valve423.steampipe.steamcontent.com;valve426.steampipe.steamcontent.com;valve427.steampipe.steamcontent.com;valve430.steamcontent.com;valve431.steamcontent.com;valve432.steamcontent.com;valve435.steamcontent.com;valve436.steamcontent.com;valve500.steamcontent.com;valve500.steampipe.steamcontent.com;valve501.steamcontent.com;valve501.steampipe.steamcontent.com;valve502.steamcontent.com;valve502.steampipe.steamcontent.com;valve503.steamcontent.com;valve504.steampipe.steamcontent.com;valve505.steamcontent.com;valve505.steampipe.steamcontent.com;valve506.steampipe.steamcontent.com;valve507.steamcontent.com;valve507.steampipe.steamcontent.com;valve508.steamcontent.com;valve508.steampipe.steamcontent.com;valve510.steamcontent.com;valve510.steampipe.steamcontent.com;valve511.steamcontent.com;valve511.steampipe.steamcontent.com;valve512.steamcontent.com;valve512.steampipe.steamcontent.com;valve513.steamcontent.com;valve513.steampipe.steamcontent.com;valve514.steamcontent.com;valve514.steampipe.steamcontent.com;valve515.steamcontent.com;valve515.steampipe.steamcontent.com;valve517.steamcontent.com;valve517.steampipe.steamcontent.com;valve518.steamcontent.com;valve518.steampipe.steamcontent.com;valve519.steamcontent.com;valve519.steampipe.steamcontent.com;valve520.steamcontent.com;valve520.steampipe.steamcontent.com;valve521.steamcontent.com;valve521.steampipe.steamcontent.com;valve522.steamcontent.com;valve522.steampipe.steamcontent.com;valve523.steamcontent.com;valve523.steampipe.steamcontent.com;valve524.steamcontent.com;valve524.steampipe.steamcontent.com;valve525.steampipe.steamcontent.com;valve526.steampipe.steamcontent.com;valve528.steamcontent.com;valve528.steampipe.steamcontent.com;valve529.steamcontent.com;valve529.steampipe.steamcontent.com;valve530.steamcontent.com;valve530.steampipe.steamcontent.com;valve531.steamcontent.com;valve531.steampipe.steamcontent.com;valve532.steamcontent.com;valve532.steampipe.steamcontent.com;valve533.steampipe.steamcontent.com;valve535.steamcontent.com;valve535.steampipe.steamcontent.com;valve536.steampipe.steamcontent.com;valve537.steamcontent.com;valve537.steampipe.steamcontent.com;valve538.steampipe.steamcontent.com;valve539.steamcontent.com;valve539.steampipe.steamcontent.com;valve540.steamcontent.com;valve540.steampipe.steamcontent.com;valve541.steamcontent.com;valve541.steampipe.steamcontent.com;valve542.steamcontent.com;valve542.steampipe.steamcontent.com;valve543.steamcontent.com;valve543.steampipe.steamcontent.com;valve544.steamcontent.com;valve544.steampipe.steamcontent.com;valve545.steamcontent.com;valve545.steampipe.steamcontent.com;valve546.steampipe.steamcontent.com;valve547.steamcontent.com;valve547.steampipe.steamcontent.com;valve548.steampipe.steamcontent.com;valve549.steampipe.steamcontent.com;valve550.steamcontent.com;valve550.steampipe.steamcontent.com;valve551.steamcontent.com;valve551.steampipe.steamcontent.com;valve552.steamcontent.com;valve555.steamcontent.com;valve556.steamcontent.com;valve558.steamcontent.com;valve559.steamcontent.com;valve560.steamcontent.com;valve561.steamcontent.com;valve562.steamcontent.com;valve563.steamcontent.com;valve564.steamcontent.com;valve565.steamcontent.com;valve565.steampipe.steamcontent.com;valve566.steamcontent.com;valve600.steamcontent.com;valve600.steampipe.steamcontent.com;valve601.steamcontent.com;valve601.steampipe.steamcontent.com;valve602.steamcontent.com;valve602.steampipe.steamcontent.com;valve603.steamcontent.com;valve603.steampipe.steamcontent.com;valve604.steampipe.steamcontent.com;valve605.steampipe.steamcontent.com;valve606.steamcontent.com;valve606.steampipe.steamcontent.com;valve607.steamcontent.com;valve607.steampipe.steamcontent.com;valve608.steampipe.steamcontent.com;valve609.steampipe.steamcontent.com;valve610.steamcontent.com;valve610.steampipe.steamcontent.com;valve611.steamcontent.com;valve612.steamcontent.com;valve612.steampipe.steamcontent.com;valve613.steamcontent.com;valve613.steampipe.steamcontent.com;valve614.steampipe.steamcontent.com;valve615.steampipe.steamcontent.com;valve616.steamcontent.com;valve616.steampipe.steamcontent.com;valve617.steamcontent.com;valve617.steampipe.steamcontent.com;valve618.steampipe.steamcontent.com;valve619.steampipe.steamcontent.com;valve62.broadcast.steamcontent.com;valve62.steamcontent.com;valve700.steamcontent.com;valve700.steampipe.steamcontent.com;valve701.steamcontent.com;valve701.steampipe.steamcontent.com;valve702.steamcontent.com;valve702.steampipe.steamcontent.com;valve703.steamcontent.com;valve703.steampipe.steamcontent.com;valve704.steamcontent.com;valve704.steampipe.steamcontent.com;valve705.steamcontent.com;valve705.steampipe.steamcontent.com;valve706.steamcontent.com;valve706.steampipe.steamcontent.com;valve707.steamcontent.com;valve707.steampipe.steamcontent.com;valve708.steampipe.steamcontent.com;valve709.steampipe.steamcontent.com;valve710.steamcontent.com;valve710.steampipe.steamcontent.com;valve711.steamcontent.com;valve711.steampipe.steamcontent.com;valve712.steamcontent.com;valve712.steampipe.steamcontent.com;valve713.chat.steamcontent.com;valve713.steamcontent.com;valve714.steamcontent.com;valve714.steampipe.steamcontent.com;valve715.steampipe.steamcontent.com;valve716.steamcontent.com;valve716.steampipe.steamcontent.com;valve718.steampipe.steamcontent.com;valve719.steamcontent.com;valve719.steampipe.steamcontent.com;valve720.steamcontent.com;valve721.steamcontent.com;valve722.steamcontent.com;valve800.steamcontent.com;valve800.steampipe.steamcontent.com;valve801.steamcontent.com;valve801.steampipe.steamcontent.com;valve802.steamcontent.com;valve802.steampipe.steamcontent.com;valve803.steamcontent.com;valve803.steampipe.steamcontent.com;valve804.steamcontent.com;valve804.steampipe.steamcontent.com;valve805.steamcontent.com;valve805.steampipe.steamcontent.com;valve806.steampipe.steamcontent.com;valve807.steamcontent.com;valve807.steampipe.steamcontent.com;valve808.steampipe.steamcontent.com;valve809.steampipe.steamcontent.com;valve900.steamcontent.com;valve900.steampipe.steamcontent.com;valve901.steamcontent.com;valve901.steampipe.steamcontent.com;valve902.steamcontent.com;valve902.steampipe.steamcontent.com;valve903.steamcontent.com;valve903.steampipe.steamcontent.com;valve904.steamcontent.com;valve904.steampipe.steamcontent.com;valve905.steamcontent.com;valve905.steampipe.steamcontent.com;valve906.steamcontent.com;valve906.steampipe.steamcontent.com;valve907.steamcontent.com;valve907.steampipe.steamcontent.com;valve908.steamcontent.com;valve908.steampipe.steamcontent.com;valve909.steamcontent.com;valve909.steampipe.steamcontent.com;valve950.steamcontent.com;valve950.steampipe.steamcontent.com;valve951.steamcontent.com;valve952.steamcontent.com;valve953.steamcontent.com;valve953.steampipe.steamcontent.com;valve954.steamcontent.com;valve954.steampipe.steamcontent.com;valve955.steamcontent.com;valve955.steampipe.steamcontent.com;valve957.steamcontent.com;valve957.steampipe.steamcontent.com;valve958.steampipe.steamcontent.com;valve959.broadcast.steamcontent.com;valve959.steamcontent.com"