Date: Mon, 08 Dec 2025 11:06:25 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 291420] [epair] Bad UDP packet checksum with epair(4) and txcsum enabled Message-ID: <bug-291420-7501-rQNZbund7X@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-291420-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-291420-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291420 --- Comment #7 from Dmitry Lukhtionov <dmitryluhtionov@gmail.com> --- I searched my update history. Previous version on host and jail machine - 14.3-STABLE from 2025-08-22 I have one more jail with epair on this host machine ``` bridge1: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500 options=0 ether 58:9c:fc:10:ff:ca id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: epair1a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 19 priority 128 path cost 2000 member: epair0a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 17 priority 128 path cost 2000 member: bge1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 2 priority 128 path cost 55 groups: bridge epair0a: flags=1008943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500 options=200009<RXCSUM,CXCSUM,VLAN_MTU,RXCSUM_IPV6> ether 02:15:ec:28:01:0a groups: epair media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>) status: active ``` Iside jail ``` epair0b: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500 options=20000b<RXCSUM,TXCSUM,VLAN_MTU,RXCSUM_IPV6> ether 02:15:ec:28:01:0b inet 193.34.20.6 netmask 0xfffffff0 broadcast 193.34.20.15 groups: epair media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> root@unbound:/ # drill i.ua @193.34.20.6 ;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 56983 ;; flags: qr rd ra ; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;; i.ua. IN A ;; ANSWER SECTION: i.ua. 149 IN A 104.18.3.81 i.ua. 149 IN A 104.18.2.81 ;; AUTHORITY SECTION: ;; ADDITIONAL SECTION: ;; Query time: 0 msec ;; SERVER: 193.34.20.6 ;; WHEN: Mon Dec 8 13:03:44 2025 ;; MSG SIZE rcvd: 54 ``` BUT ''' root@unbound:/ # ping 193.34.20.5 PING 193.34.20.5 (193.34.20.5): 56 data bytes ^C --- 193.34.20.5 ping statistics --- 3 packets transmitted, 0 packets received, 100.0% packet loss root@unbound:/ # ping 193.34.20.4 PING 193.34.20.4 (193.34.20.4): 56 data bytes 64 bytes from 193.34.20.4: icmp_seq=0 ttl=64 time=0.410 ms 64 bytes from 193.34.20.4: icmp_seq=1 ttl=64 time=0.388 ms ^C --- 193.34.20.4 ping statistics --- 2 packets transmitted, 2 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 0.388/0.399/0.410/0.011 ms root@unbound:/ # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: icmp_seq=0 ttl=120 time=24.884 ms 64 bytes from 8.8.8.8: icmp_seq=1 ttl=120 time=24.976 ms ^C --- 8.8.8.8 ping statistics --- 2 packets transmitted, 2 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 24.884/24.930/24.976/0.046 ms root@unbound:/ # arp -an ? (193.34.20.5) at c4:34:6b:b8:e4:39 on epair0b expires in 1192 seconds [ethernet] ? (193.34.20.4) at 94:57:a5:55:a2:21 on epair0b expires in 996 seconds [ethernet] ? (193.34.20.8) at 02:ef:5d:1e:0d:0b on epair0b expires in 793 seconds [ethernet] ''' -- You are receiving this mail because: You are the assignee for the bug.help
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