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SSHでbind: Cannot assign requested addressとなった時の対応方法

Last updated at Posted at 2019-06-19
  • 環境(Docker)
    • CentOS Linux release 7.6.1810 (Core)
    • OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017

事象 : SSHでポートフォワードしようとしたらなんか言われた

別段、接続できないわけでも何でもないが気になった。

$ ssh -N -L 1521:10.0.1.2:1521 -i ~/.ssh/key.pem ec2-user@1.23.45.67
bind: Cannot assign requested address

原因 : IPv6のポートを使用しようとしているため

ssh 接続時に IPv6 のポートを転送しないようにする
SSH port forwarding: bind: Cannot assign requested address | Electricmonk.nl weblog

対応 : IPv4であることを-4オプションで明示する

$ ssh -N -L 1521:10.0.1.2:1521 -i ~/.ssh/key.pem -4 ec2-user@1.23.45.67
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