Re: Limit the number of Additional RR in an Answer
Benoit Panizzon <[email protected]>
| Newsgroups | gmane.network.dns.bind9.user,gmane.network.dns.bind.user |
|---|---|
| Organization | ImproWare AG |
| Message-ID | <[email protected]> |
Hi Jeremy Thanks for the Link > Can you share an example here of the NAPTR or SRV query resulting in > Additional section records? The additional sections make sense to me, they avoid further A/AAAA lookups but I suspect they might be the cause for the crashed of small memory CPE's. I have one vendor also investigating in this direction and suspecting that they do not allocate enough memory to handle such replies. version.bind. 0 CH TXT "9.18.33-1~deb12u2-Debian" running on ns.woody.ch $ dig SRV _sip._udp.dev-cpereg.devtel.imp.ch. @ns.woody.ch ; <<>> DiG 9.18.33-1~deb12u2-Debian <<>> SRV _sip._udp.dev-cpereg.devtel.imp.ch. @ns.woody.ch ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57375 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 5 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ; COOKIE: cfa37ea4cfa0066d010000006835c58285260824e3cedafe (good) ;; QUESTION SECTION: ;_sip._udp.dev-cpereg.devtel.imp.ch. IN SRV ;; ANSWER SECTION: _sip._udp.dev-cpereg.devtel.imp.ch. 254 IN SRV 0 0 5060 dev-sbc02.devtel.imp.ch. _sip._udp.dev-cpereg.devtel.imp.ch. 254 IN SRV 0 0 5060 dev-sbc01.devtel.imp.ch. ;; ADDITIONAL SECTION: dev-sbc01.devtel.imp.ch. 76 IN AAAA 2001:4060:1:8e11::23:249 dev-sbc02.devtel.imp.ch. 76 IN AAAA 2001:4060:1:8e11::23:248 dev-sbc01.devtel.imp.ch. 76 IN A 157.161.23.249 dev-sbc02.devtel.imp.ch. 76 IN A 157.161.23.248 ;; Query time: 12 msec ;; SERVER: 2001:4060:dead:beef::1#53(ns.woody.ch) (UDP) ;; WHEN: Tue May 27 16:00:34 CEST 2025 ;; MSG SIZE rcvd: 265 Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________ -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list [email protected] https://lists.isc.org/mailman/listinfo/bind-users