ifconfig -v ix0 output delay

Hi All,

     A small annoyance, but I was wondering why "ifconfig -v ix0" seems 
to take a "long time" compared to other 10G nics.  e.g.


0(nfs3b2)# time ifconfig -v ix0
ix0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=4e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6,NOMAP>
         ether 0c:c4:7a:6f:20:a0
         inet6 fe80::ec4:7aff:fe6f:20a0%ix0 prefixlen 64 scopeid 0x1
         inet6 2607:f3e0:0:6:ec4:7aff:fe6f:20a0 prefixlen 64 autoconf
         inet 10.255.255.132 netmask 0xffffff00 broadcast 10.255.255.255
         media: Ethernet autoselect (1000baseT <full-duplex>)
         status: active
         nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
0.000u 1.251s 0:01.25 100.0%    167+198k 0+0io 0pf+0w
0(nfs3b2)#

vs

% time ifconfig -v cxl0
cxl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=6ec07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6,HWRXTSTMP,NOMAP>
         ether 00:07:43:60:c4:b0
         inet 10.251.12.1 netmask 0xffffff00 broadcast 10.251.12.255
         media: Ethernet 10Gbase-Twinax <full-duplex>
         status: active
         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
         plugged: SFP/SFP+/SFP28 Unknown (Copper pigtail)
         vendor: OEM PN: SFP-H10GB-CU5M SN: S220304060201 DATE: 2022-03-24
0.000u 0.002s 0:00.02 0.0%      0+0k 0+0io 0pf+0w


Going through truss, the delay seems to be after 
"ioctl(3,SIOCGIFSTATUS,0x65d9929d0f0)             ERR#22 'Invalid argument'"


socket(PF_INET,SOCK_DGRAM|SOCK_CLOEXEC,0)        = 6 (0x6)
ioctl(6,SIOCGIFINDEX,0x65d9929cbf0)              = 0 (0x0)
close(6)                                         = 0 (0x0)
ioctl(5,SIOCGDEFIFACE_IN6,0x65d9929cca0)         = 0 (0x0)
close(5)                                         = 0 (0x0)
         nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
write(1,"\tnd6 options=23<PERFORMNUD,ACCE"...,56) = 56 (0x38)
ioctl(3,SIOCGIFSTATUS,0x65d9929d0f0)             ERR#22 'Invalid argument'



ioctl(4,SIOCGI2C,0x65d9929ca50)                  = 0 (0x0)
close(3)                                         = 0 (0x0)
close(4)                                         = 0 (0x0)
exit(0x0)
process exit, rval = 0