Applied, thank you.
On Sat, Oct 8, 2022 at 7:23 PM Uwe Kleine-König <u...@kleine-koenig.org> wrote: > > The transaction IDs generated by res_mkquery() for both glibc and musl only > depends on the state of the monotonic clock. > For some machines (here: a TP-Link RE200 powered by a MediaTek MT7620A) > the monotonic clock has a coarse resolution (here: 20 µs) and it can happen > that the requests for A and AAAA share the same transaction ID. > > In that case the mapping from received responses to the sent queries > doesn't work and name resolution fails as follows: > > # /bin/busybox nslookup heise.de > Server: 127.0.0.1 > Address: 127.0.0.1:53 > > Non-authoritative answer: > Name: heise.de > Address: 193.99.144.80 > > *** Can't find heise.de: No answer > > because the AAAA reply is dropped as a duplicate reply to the A query. > > To prevent this make sure the transaction IDs are unique. > --- > networking/nslookup.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/networking/nslookup.c b/networking/nslookup.c > index 6da97baf4216..61e3eb6052ab 100644 > --- a/networking/nslookup.c > +++ b/networking/nslookup.c > @@ -978,6 +978,10 @@ int nslookup_main(int argc UNUSED_PARAM, char **argv) > } > } > > + /* Ensure the Transaction IDs are unique */ > + for (rc = 1; rc < G.query_count; rc++) > + G.query[rc].query[1] = G.query[rc - 1].query[1] + 1; > + > for (rc = 0; rc < G.serv_count;) { > int c; > > -- > 2.37.2 > > _______________________________________________ > busybox mailing list > busybox@busybox.net > http://lists.busybox.net/mailman/listinfo/busybox _______________________________________________ busybox mailing list busybox@busybox.net http://lists.busybox.net/mailman/listinfo/busybox