Limited Broadcast in FreeBSD 10.0-STABLE
Jeremy Boy
mail at jboy.eu
Fri Sep 26 18:51:21 UTC 2014
Hello everybody,
it seems to me that limited broadcast is broken on FreeBSD 10.0-STABLE.
My setup:
FreeBSD server (FreeBSD server.home.local 10.0-STABLE FreeBSD 10.0-STABLE #0 r264752: Tue Apr 22 22:09:47 CEST 2014 jb at server.home.local:/usr/obj/usr/src10/sys/GENERIC amd64)
MacBook Pro (Darwin jb-mbp.local 13.3.0 Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64 x86_64)
Both are connected over Ethernet on the same layer 2 switch.
> root at server: $ ping -c 4 255.255.255.255
> PING 255.255.255.255 (255.255.255.255): 56 data bytes
> 64 bytes from 255.255.255.255: icmp_seq=0 ttl=64 time=0.364 ms
> 64 bytes from 255.255.255.255: icmp_seq=1 ttl=64 time=0.357 ms
> 64 bytes from 255.255.255.255: icmp_seq=2 ttl=64 time=0.373 ms
> 64 bytes from 255.255.255.255: icmp_seq=3 ttl=64 time=0.373 ms
>
> --- 255.255.255.255 ping statistics ---
> 4 packets transmitted, 4 packets received, 0.0% packet loss
> round-trip min/avg/max/stddev = 0.357/0.367/0.373/0.007 ms
> root at jb-mbp: $ tcpdump -i en0 -nX icmp
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on en0, link-type EN10MB (Ethernet), capture size 65535 bytes
> ^C
> 0 packets captured
> 1532 packets received by filter
> 0 packets dropped by kernel
The other way around, it works:
> root at jb-mbp: $ ping -c 4 255.255.255.255
> PING 255.255.255.255 (255.255.255.255): 56 data bytes
> 64 bytes from 192.168.2.116: icmp_seq=0 ttl=64 time=0.124 ms
> 64 bytes from 255.255.255.255: icmp_seq=0 ttl=64 time=0.574 ms
> 64 bytes from 192.168.2.116: icmp_seq=1 ttl=64 time=0.078 ms
> 64 bytes from 255.255.255.255: icmp_seq=1 ttl=64 time=0.498 ms
> 64 bytes from 192.168.2.116: icmp_seq=2 ttl=64 time=0.208 ms
> 64 bytes from 255.255.255.255: icmp_seq=2 ttl=64 time=0.620 ms
> 64 bytes from 192.168.2.116: icmp_seq=3 ttl=64 time=0.234 ms
>
> --- 255.255.255.255 ping statistics ---
> 4 packets transmitted, 4 packets received, +3 duplicates, 0.0% packet loss
> round-trip min/avg/max/stddev = 0.078/0.334/0.620/0.208 ms
> root at server: $ sudo tcpdump -i em0 -nX icmp
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on em0, link-type EN10MB (Ethernet), capture size 65535 bytes
> capability mode sandbox enabled
> 20:37:09.652662 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 0, length 64
> 0x0000: 4500 0054 ed57 0000 4001 ca35 c0a8 0274 E..T.W.. at ..5...t
> 0x0010: ffff ffff 0800 4128 0aad 0000 5425 b255 ......A(....T%.U
> 0x0020: 0009 baa3 0809 0a0b 0c0d 0e0f 1011 1213 ................
> 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"#
> 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123
> 0x0050: 3435 3637 4567
> 20:37:10.653462 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 1, length 64
> 0x0000: 4500 0054 e265 0000 4001 d527 c0a8 0274 E..T.e.. at ..'...t
> 0x0010: ffff ffff 0800 3dd8 0aad 0001 5425 b256 ......=.....T%.V
> 0x0020: 0009 bdf1 0809 0a0b 0c0d 0e0f 1011 1213 ................
> 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"#
> 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123
> 0x0050: 3435 3637 4567
> 20:37:11.654650 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 2, length 64
> 0x0000: 4500 0054 195b 0000 4001 9e32 c0a8 0274 E..T.[.. at ..2...t
> 0x0010: ffff ffff 0800 3990 0aad 0002 5425 b257 ......9.....T%.W
> 0x0020: 0009 c237 0809 0a0b 0c0d 0e0f 1011 1213 ...7............
> 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"#
> 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123
> 0x0050: 3435 3637 4567
> 20:37:12.655765 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 3, length 64
> 0x0000: 4500 0054 20b1 0000 4001 96dc c0a8 0274 E..T.... at ......t
> 0x0010: ffff ffff 0800 350c 0aad 0003 5425 b258 ......5.....T%.X
> 0x0020: 0009 c6b9 0809 0a0b 0c0d 0e0f 1011 1213 ................
> 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"#
> 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123
> 0x0050: 3435 3637 4567
> ^C
> 4 packets captured
> 650 packets received by filter
> 0 packets dropped by kernel
I've tried this with several FreeBSD (all 10-STABLE) machines, none worked. Who and what is wrong?
> root at server: $ ifconfig
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
> options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
> ether 00:22:4d:ac:d4:14
> inet 192.168.2.90 netmask 0xffffff00 broadcast 192.168.2.255
> inet6 fe80::222:4dff:feac:d414%em0 prefixlen 64 scopeid 0x1
> inet 192.168.2.91 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.92 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.93 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.94 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.95 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.96 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.97 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.98 netmask 0xffffff00 broadcast 192.168.2.255
> inet 192.168.2.99 netmask 0xffffff00 broadcast 192.168.2.255
> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> media: Ethernet 1000baseT <full-duplex>
> status: active
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
> options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
> inet6 ::1 prefixlen 128
> inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
> inet 127.0.0.1 netmask 0xff000000
> nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
> tun0: flags=8010<POINTOPOINT,MULTICAST> metric 0 mtu 1500
> options=80000<LINKSTATE>
> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> Opened by PID 1092
> pflog0: flags=141<UP,RUNNING,PROMISC> metric 0 mtu 33160
> root at server: $ route get 255.255.255.255
> route to: 255.255.255.255
> destination: default
> mask: default
> gateway: easy.box
> fib: 0
> interface: em0
> flags: <UP,GATEWAY,DONE,STATIC>
> recvpipe sendpipe ssthresh rtt,msec mtu weight expire
> 0 0 0 0 9000 1 0
Thanks in advance!
More information about the freebsd-questions
mailing list