Hello !
My NTP server sends all multicast traffic from eth0 and I don't
know how to configure it to send it to the LAN connected via eth2.
The details are below. Could you please give me some
hints or help ?
Thank you
Martin
- - - - - -
In the ntp.conf there is:
broadcast 224.0.1.1 key 145 ttl 3
and the linux kernel has a route for class D addresses, it uses eth2:
Destination Gateway Genmask Flags Metric Ref Use
Iface
224.0.0.0 * 240.0.0.0 U 0 0 0
eth2
but the output from ntp -D2 shows, that NTP has chosen eth0 (fd #18) and
not eth2 (verified with tcpdump):
created interface #2: fd=18, bfd=-1, name=eth0, flags=0x19, scope=0,
ifindex=0, sin=217.XX.XXX.XX, bcast=217.XX.XXX.223,, mask=255.255.255.224,
Enabled:
......
created interface #3: fd=19, bfd=-1, name=eth2, flags=0x19, scope=0,
ifindex=0, sin=192.168.XX.XX, bcast=192.168.XX.255,, mask=255.255.255.0,
Enabled:
......
MCAST ***** sendpkt(fd=18 dst=224.0.1.1, src=217.XX.XXX.XX, ttl=96,
len=68)
(BTW, why is ttl=96 and not 3 ? But that's not the problem.)
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