Date: Tue, 15 Jan 2002 14:07:37 -0800 (PST) From: Julian Elischer <julian@elischer.org> To: Bjoern Fischer <bfischer@Techfak.Uni-Bielefeld.DE> Cc: freebsd-net@FreeBSD.ORG Subject: Re: bridged interfaces don't see broadcasts Message-ID: <Pine.BSF.4.21.0201151407090.82675-100000@InterJet.elischer.org> In-Reply-To: <20020115212056.GA3520@frolic.no-support.loc>
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What happens if you use netgraph bridging? (/usr/share/examples/netgraph) On Tue, 15 Jan 2002, Bjoern Fischer wrote: > Hello, >=20 > on a NIS and NFS serving machine I bridged two ethernet NICs: >=20 > net.link.ether.bridge_cfg: vr0:0,ed1:0 > net.link.ether.bridge: 1 > net.link.ether.bridge_ipfw: 0 > net.link.ether.bridge_ipfw_drop: 0 > net.link.ether.bridge_ipfw_collisions: 0 >=20 > vr0: flags=3D8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 150= 0 > inet6 fe80::250:baff:fe23:df3%vr0 prefixlen 64 scopeid 0x1=20 > inet 192.168.43.1 netmask 0xffffff00 broadcast 192.168.43.255 > ether 00:50:ba:23:0d:f3=20 > media: Ethernet autoselect (100baseTX <full-duplex>) > status: active > ed1: flags=3D8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 150= 0 > inet6 fe80::24f:4cff:fe02:4a4c%ed1 prefixlen 64 scopeid 0x3=20 > ether 00:4f:4c:02:4a:4c=20 >=20 > ed1 is an old 10-Base2/10-Base-T. >=20 > It seems that broadcasts (coming from the ed1 segment) are transmitted > by the bridge to the vr0 segment (as it should be). But vr0 never sees > any of these broadcast packets. That's why NIS does not work on any > client that sits on the ed1 segment. >=20 > As an experiment I enabled net.inet.icmp.bmcastecho on the server > (192.168.43.1) and on some clients on both segments. When pinging > 192.168.43.255 from a vr0 segment client everything is fine. When > pinging from an ed1 segment client the response from 192.168.43.1 > is always missing. >=20 > -Bj=F6rn >=20 >=20 > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message >=20 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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