From 57786db7978116b7a3414baad908a8c92ed33abb Mon Sep 17 00:00:00 2001 From: Yu Watanabe Date: Fri, 21 Jan 2022 04:32:38 +0900 Subject: [PATCH] resolve: add debuging log of interface name change --- src/resolve/resolved-link.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/resolve/resolved-link.c b/src/resolve/resolved-link.c index 6c910498a25..335862b80e1 100644 --- a/src/resolve/resolved-link.c +++ b/src/resolve/resolved-link.c @@ -237,7 +237,11 @@ int link_process_rtnl(Link *l, sd_netlink_message *m) { (void) sd_netlink_message_read_u32(m, IFLA_MTU, &l->mtu); (void) sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &l->operstate); - if (sd_netlink_message_read_string(m, IFLA_IFNAME, &n) >= 0) { + if (sd_netlink_message_read_string(m, IFLA_IFNAME, &n) >= 0 && + !streq_ptr(l->ifname, n)) { + if (l->ifname) + log_link_debug(l, "Interface name change detected: %s -> %s", l->ifname, n); + r = free_and_strdup(&l->ifname, n); if (r < 0) return r; -- 2.47.3