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| author | Holger Kummert <Holger.Kummert@Sophos.com> | 2015-06-25 18:01:20 +0200 |
|---|---|---|
| committer | Gert Doering <gert@greenie.muc.de> | 2015-06-26 21:41:33 +0200 |
| commit | e5f71d674e3b119d6a252d7cef1c17b5c2b36a9a (patch) | |
| tree | 550ecfad911926d03b3be4760bfbd01ef9ad65cc /src/openvpn | |
| parent | 3d6a4cded2b20fb816b17d70eb65cd6c14a95eff (diff) | |
| download | openvpn-e5f71d674e3b119d6a252d7cef1c17b5c2b36a9a.tar.gz openvpn-e5f71d674e3b119d6a252d7cef1c17b5c2b36a9a.tar.xz openvpn-e5f71d674e3b119d6a252d7cef1c17b5c2b36a9a.zip | |
Del ipv6 addr on close of linux tun interface
When a linux tun interface is closed (e.g. on disconnect)
an optional ipv6 addr that was previously set is deleted now.
Without this patch a later reconnect could fail with
'Linux ip -6 addr add failed: external program exited with error status: 2'
and openvpn would exit.
This is mainly relevant for persistant tun devices (staying around
after openvpn exits) but can also happen at reconnect.
If addresses are *supposed* to stay around on openvpn exit, run
openvpn with --ifconfig-noexec and configure IPv4/IPv6 addresses
manually before openvpn starts (or using an --up script).
Trac #141
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <1435248080-12670-1-git-send-email-Holger.Kummert@Sophos.com>
URL: http://article.gmane.org/gmane.network.openvpn.devel/9810
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Diffstat (limited to 'src/openvpn')
| -rw-r--r-- | src/openvpn/tun.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/openvpn/tun.c b/src/openvpn/tun.c index 59e7436..13e3826 100644 --- a/src/openvpn/tun.c +++ b/src/openvpn/tun.c @@ -1860,6 +1860,32 @@ close_tun (struct tuntap *tt) argv_msg (M_INFO, &argv); openvpn_execve_check (&argv, NULL, 0, "Linux ip addr del failed"); + if (tt->ipv6 && tt->did_ifconfig_ipv6_setup) + { + const char * ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); + +#ifdef ENABLE_IPROUTE + argv_printf (&argv, "%s -6 addr del %s/%d dev %s", + iproute_path, + ifconfig_ipv6_local, + tt->netbits_ipv6, + tt->actual_name + ); + argv_msg (M_INFO, &argv); + openvpn_execve_check (&argv, NULL, 0, "Linux ip -6 addr del failed"); +#else + argv_printf (&argv, + "%s %s del %s/%d", + IFCONFIG_PATH, + tt->actual_name, + ifconfig_ipv6_local, + tt->netbits_ipv6 + ); + argv_msg (M_INFO, &argv); + openvpn_execve_check (&argv, NULL, 0, "Linux ifconfig inet6 del failed"); +#endif + } + argv_reset (&argv); gc_free (&gc); } |