Date: Tue, 11 Nov 2025 07:33:59 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 290768] if_wg(4): handshake response has src and dst reverse Message-ID: <bug-290768-7501-IZRwMTfQIi@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-290768-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-290768-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290768 --- Comment #10 from relvy <it@vineyard-sha.de> --- (In reply to Kyle Evans from comment #8) I tested the patch on top of the other one. tcpdump output: 08:29:57.135466 e0:28:6d:89:6b:02 > 00:00:5e:00:01:01, ethertype IPv4 (0x0800), length 190: a.b.c.d.23423 > 192.168.178.2.51820: UDP, length 148 08:29:57.135523 00:90:27:e6:33:13 > e0:28:6d:89:6b:02, ethertype IPv4 (0x0800), length 190: a.b.c.d.23423 > 192.168.178.2.51820: UDP, length 148 08:30:02.246290 e0:28:6d:89:6b:02 > 00:00:5e:00:01:01, ethertype IPv4 (0x0800), length 190: a.b.c.d.23423 > 192.168.178.2.51820: UDP, length 148 08:30:02.246315 00:90:27:e6:33:13 > e0:28:6d:89:6b:02, ethertype IPv4 (0x0800), length 190: a.b.c.d.23423 > 192.168.178.2.51820: UDP, length 148 I see no incoming traffic when I initiate the VPN from my peer. I see only the reply with correct src / dst IP and with reversed src / dst port. In dmesg I still see the error code 47 (EAFNOSUPPORT) [330] wg1: Handshake for peer 1 did not complete after 5 seconds, retrying (try 12) [330] wg1: Sending handshake initiation to peer 1 [330] wg1: Unable to send packet: 47 "wg show" shows a difference with this patch. Without this patch: $ wg show interface: wg1 public key: <secret> listening port: 51820 peer: <secret> endpoint: a.b.c.d:51820 allowed ips: 10.251.0.3/32 transfer: 0 B received, 261.17 KiB sent persistent keepalive: every 30 seconds With this patch there is no endpoint recorded because the incoming traffic is "missing": $ wg show interface: wg1 public key: <secret> listening port: 51820 peer: <secret> allowed ips: 10.251.0.3/32 transfer: 0 B received, 11.27 KiB sent persistent keepalive: every 30 seconds -- You are receiving this mail because: You are the assignee for the bug.
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