[Bug 278028] VXLAN interface is not working

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From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 18 Sep 2024 12:56:59 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278028

Dmitriy V. <d@voronin.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |d@voronin.it

--- Comment #8 from Dmitriy V. <d@voronin.it> ---
vxlan doesn't work for me.

gw1:

root@gw1:/etc # uname -a
FreeBSD host 14.1-RELEASE-p4 FreeBSD 14.1-RELEASE-p4 releng/14.1-86d01789b
GENERIC amd64
root@gw1:/etc # ifconfig 
vmx0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0
mtu 1500
       
options=48400b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,HWSTATS,MEXTPG>
        ether 00:50:56:ab:65:f8
        inet 10.11.3.10 netmask 0xffffff00 broadcast 10.11.3.255
        media: Ethernet autoselect
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
vmx1: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0
mtu 1500
       
options=48400b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,HWSTATS,MEXTPG>
        ether 00:50:56:ab:e3:d8
        media: Ethernet autoselect
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
lo0: flags=1008049<UP,LOOPBACK,RUNNING,MULTICAST,LOWER_UP> metric 0 mtu 16384
        options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        inet 127.0.0.1 netmask 0xff000000
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
        groups: lo
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
vxlan0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0
mtu 1450
        options=80020<JUMBO_MTU,LINKSTATE>
        ether 58:9c:fc:00:51:74
        inet 192.168.254.1 netmask 0xffffff00 broadcast 192.168.254.255
        groups: vxlan
        vxlan vni 1 local 10.11.3.10:4789 remote 10.11.3.11:4789
        media: Ethernet autoselect (autoselect <full-duplex>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

gw2:

root@gw2:/etc # uname -a
FreeBSD host 14.1-RELEASE-p4 FreeBSD 14.1-RELEASE-p4 releng/14.1-86d01789b
GENERIC amd64
root@gw2:/etc # ifconfig 
vmx0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0
mtu 1500
       
options=48400b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,HWSTATS,MEXTPG>
        ether 00:50:56:ab:ec:42
        inet 10.11.3.11 netmask 0xffffff00 broadcast 10.11.3.255
        media: Ethernet autoselect
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
vmx1: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0
mtu 1500
       
options=48400b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,HWSTATS,MEXTPG>
        ether 00:50:56:ab:1a:65
        media: Ethernet autoselect
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
lo0: flags=1008049<UP,LOOPBACK,RUNNING,MULTICAST,LOWER_UP> metric 0 mtu 16384
        options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        inet 127.0.0.1 netmask 0xff000000
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
        groups: lo
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
vxlan0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0
mtu 1450
        options=80020<JUMBO_MTU,LINKSTATE>
        ether 58:9c:fc:00:51:74
        inet 192.168.254.2 netmask 0xffffff00 broadcast 192.168.254.255
        groups: vxlan
        vxlan vni 1 local 10.11.3.11:4789 remote 10.11.3.10:4789
        media: Ethernet autoselect (autoselect <full-duplex>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

root@gw1:/etc # tcpdump -vv -ni vmx0 host 10.11.3.11
tcpdump: listening on vmx0, link-type EN10MB (Ethernet), snapshot length 262144
bytes
15:53:02.968609 IP (tos 0x0, ttl 64, id 15597, offset 0, flags [none], proto
UDP (17), length 78)
    10.11.3.11.5785 > 10.11.3.10.4789: [no cksum] VXLAN, flags [I] (0x08), vni
1
ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.254.1 tell
192.168.254.2, length 28
15:53:04.041181 IP (tos 0x0, ttl 64, id 15599, offset 0, flags [none], proto
UDP (17), length 78)
    10.11.3.11.5785 > 10.11.3.10.4789: [no cksum] VXLAN, flags [I] (0x08), vni
1
ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.254.1 tell
192.168.254.2, length 28
15:53:05.113726 IP (tos 0x0, ttl 64, id 15601, offset 0, flags [none], proto
UDP (17), length 78)
    10.11.3.11.5785 > 10.11.3.10.4789: [no cksum] VXLAN, flags [I] (0x08), vni
1
ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.254.1 tell
192.168.254.2, length 28
15:53:06.166138 IP (tos 0x0, ttl 64, id 15603, offset 0, flags [none], proto
UDP (17), length 78)
    10.11.3.11.5785 > 10.11.3.10.4789: [no cksum] VXLAN, flags [I] (0x08), vni
1
ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.254.1 tell
192.168.254.2, length 28

root@gw2:/etc # arp -a
? (10.11.3.1) at 00:50:56:95:1a:df on vmx0 expires in 1140 seconds [ethernet]
? (10.11.3.10) at 00:50:56:ab:65:f8 on vmx0 expires in 1140 seconds [ethernet]
? (10.11.3.11) at 00:50:56:ab:ec:42 on vmx0 permanent [ethernet]
? (192.168.254.2) at 58:9c:fc:00:51:74 on vxlan0 permanent [ethernet]
? (192.168.254.1) at (incomplete) on vxlan0 expired [ethernet]

root@gw1:/etc # arp -an
? (10.11.3.1) at 00:50:56:95:1a:df on vmx0 expires in 1103 seconds [ethernet]
? (10.11.3.10) at 00:50:56:ab:65:f8 on vmx0 permanent [ethernet]
? (10.11.3.11) at 00:50:56:ab:ec:42 on vmx0 expires in 1103 seconds [ethernet]
? (192.168.254.2) at (incomplete) on vxlan0 expired [ethernet]
? (192.168.254.1) at 58:9c:fc:00:51:74 on vxlan0 permanent [ethernet]

Does anyone have any ideas why it might not work?

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