[PATCH v7 1/4] kdump-lib.sh: support link local ipv6 address with interface name

When dumping to ssh via local ipv6 address, the ssh parameter in kdump.conf is supposed to have the form like ssh user@fe80::cc1:8bff:fe90:b95f%eth0 where "%eth0" is an existing network interface supporting ipv6. The get_remote_host function in kdump-lib.sh currently doesn't remove the network interface in the link local ipv6 addresses, causing the ip command in kdump_install_net function to fail, leading to a "Bad kdump location" message. This commit 1) adds a helper function is_ipv6_link_local to find out whether a host is a link local ipv6 address; 2) makes get_remote_host function remove network interface in link local ipv6 addresses if there are any to support host finding for link local ipv6 addresses. Signed-off-by: Ziyue Yang <ziyang(a)redhat.com&gt; --- kdump-lib.sh | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/kdump-lib.sh b/kdump-lib.sh index 3f0af91..e67efda 100755 --- a/kdump-lib.sh +++ b/kdump-lib.sh @@ -312,6 +312,13 @@ is_ipv6_address() echo $1 | grep -q ":" } +is_ipv6_link_local() +{ + is_ipv6_address $1 && { + echo $1 | grep -q "^fe80::" + } +} + # get ip address or hostname from nfs/ssh config value get_remote_host() { @@ -323,6 +330,10 @@ get_remote_host() _config_val=${_config_val%:/*} _config_val=${_config_val#[} _config_val=${_config_val%]} + # factor out network inteface segment in link local ipv6 address + if is_ipv6_link_local $_config_val; then + _config_val=${_config_val%\%*} + fi echo $_config_val } -- 2.9.3