我尝试了所有类似问题的解决方案。
Err:1 http://in.archive.ubuntu.com/ubuntu bionic InRelease
Could not connect to in.archive.ubuntu.com:80 (91.189.88.161). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Could not connect to in.archive.ubuntu.com:80 (91.189.88.162). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Could not connect to in.archive.ubuntu.com:80 (91.189.88.149). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Could not connect to in.archive.ubuntu.com:80 (91.189.88.152). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
Err:2 http://in.archive.ubuntu.com/ubuntu bionic-updates InRelease
Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
Err:3 http://in.archive.ubuntu.com/ubuntu bionic-backports InRelease
Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
Err:4 http://in.archive.ubuntu.com/ubuntu bionic-security InRelease
Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
Err:5 http://dl.google.com/linux/chrome/deb stable InRelease
Could not connect to dl.google.com:80 (172.217.167.14). - connect (111: Connection refused) Cannot initiate the connection to dl.google.com:80 (2404:6800:4002:80a::200e). - connect (101: Network is unreachable)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic/InRelease Could not connect to in.archive.ubuntu.com:80 (91.189.88.161). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Could not connect to in.archive.ubuntu.com:80 (91.189.88.162). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Could not connect to in.archive.ubuntu.com:80 (91.189.88.149). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Could not connect to in.archive.ubuntu.com:80 (91.189.88.152). - connect (111: Connection refused) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-security/InRelease Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::14). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::17). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1360:8001::21). - connect (101: Network is unreachable) Cannot initiate the connection to in.archive.ubuntu.com:80 (2001:67c:1560:8001::11). - connect (101: Network is unreachable)
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/InRelease Could not connect to dl.google.com:80 (172.217.167.14). - connect (111: Connection refused) Cannot initiate the connection to dl.google.com:80 (2404:6800:4002:80a::200e). - connect (101: Network is unreachable)
W: Some index files failed to download. They have been ignored, or old ones used instead.