Messages in this thread |  | | | Date | Sun, 25 Apr 1999 21:35:56 -0400 | | From | Illuminatus Primus <> | | Subject | Re: 2.2.6 breaks one-way cable modem (sb1000) |
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Aha!
In Debian 2.1, /etc/init.d/netbase contains: # This is the best method: turn on Source Address Verification and get # spoof protection on all current and future interfaces. if [ -e /proc/sys/net/ipv4/conf/all/rp_filter ]; then echo -n "Setting up IP spoofing protection..." for f in /proc/sys/net/ipv4/conf/*/rp_filter; do echo 1 > $f done echo "done." fi I was wondering why my rp_filter was defaulting to 1 when Documentation/proc.txt clearly said that it defaulted to 0.
However, I still don't know exactly why this only happens in 2.2.6 and not 2.2.0. Diffs between the two trees don't contain the text "rp_filter" at all. Perhaps it was a higher-up reorganization of the /proc hierarchy..
Vermont@gate.net
+----[ On Sun, Apr 25, at 09:30PM(-0400), Steven N. Hirsch wrote: ]-------------- | On Sat, 24 Apr 1999, Christoph Lameter wrote: | > Do | > | > echo 0 >/proc/net/ipv4/xxx/rp-filter | > | > to switch the discarding off. I got hit by that one too. | > | > On Sat, 24 Apr 1999, Illuminatus Primus wrote: | > | > > After upgrading from 2.2.0 to 2.2.6, it seems that packets that arrive | > > on an interface using the same address as another previously-existing | > > interface get discarded. | | Hi Christoph. | | I'm not seeing this problem with 2.2.6-ac1. It defaults to an rp_filter | setting of zero, though. Has the default on the main-line (non-ac) | kernels changed? | | Steve | +----[ End Quote ]---------------------------
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