Can someone check to see that RDNS is working for my hosts? If I check it from an IPv4 only client outside my network, I don't get an answer, but I do see a bunch of traffic passing through my firewall intended for my DNS servers from HE
These are the results I get:
[cholzha@et791 ~]$ dig -x 2001:470:c27d:e000:20c:29ff:fe26:51b7
; <<>> DiG 9.4.3-P2 <<>> -x 2001:470:c27d:e000:20c:29ff:fe26:51b7
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 53708
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;7.b.1.5.6.2.e.f.f.f.9.2.c.0.2.0.0.0.0.e.d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. IN PTR
;; Query time: 5 msec
;; SERVER: 131.183.2.111#53(131.183.2.111)
;; WHEN: Tue Nov 24 15:00:03 2009
;; MSG SIZE rcvd: 90
[cholzha@et791 ~]$ dig -x 2001:470:c27d:e000:88cb:fe1b:c4b0:92a1
; <<>> DiG 9.4.3-P2 <<>> -x 2001:470:c27d:e000:88cb:fe1b:c4b0:92a1
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 3948
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;1.a.2.9.0.b.4.c.b.1.e.f.b.c.8.8.0.0.0.e.d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. IN PTR
;; Query time: 5 msec
;; SERVER: 131.183.2.111#53(131.183.2.111)
;; WHEN: Tue Nov 24 15:06:27 2009
;; MSG SIZE rcvd: 90
Do I need to have IPv6 connectivity on the host I'm checking this from?
Works for me:
; <<>> DiG 9.4.3-P1 <<>> -x 2001:470:c27d:e000:20c:29ff:fe26:51b7
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43012
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; QUESTION SECTION:
;7.b.1.5.6.2.e.f.f.f.9.2.c.0.2.0.0.0.0.e.d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. IN PTR
;; ANSWER SECTION:
7.b.1.5.6.2.e.f.f.f.9.2.c.0.2.0.0.0.0.e.d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. 3600 IN PTR mars.sscorp.com.
;; AUTHORITY SECTION:
d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. 4900 IN NS selma.sscorp.com.
d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. 4900 IN NS patty.sscorp.com.
;; ADDITIONAL SECTION:
selma.sscorp.com. 172800 IN AAAA 2001:470:c27d:e000:88cb:fe1b:c4b0:92a1
patty.sscorp.com. 172800 IN AAAA 2001:470:c27d:e000:41bd:d9bf:9b66:9b95
;; Query time: 222 msec
;; SERVER: 192.168.0.3#53(192.168.0.3)
;; WHEN: Tue Nov 24 13:18:11 2009
;; MSG SIZE rcvd: 215
; <<>> DiG 9.4.3-P1 <<>> -x 2001:470:c27d:e000:20c:29ff:fe26:51b7 +trace
;; global options: printcmd
. 336186 IN NS J.ROOT-SERVERS.NET.
. 336186 IN NS I.ROOT-SERVERS.NET.
. 336186 IN NS F.ROOT-SERVERS.NET.
. 336186 IN NS K.ROOT-SERVERS.NET.
. 336186 IN NS M.ROOT-SERVERS.NET.
. 336186 IN NS D.ROOT-SERVERS.NET.
. 336186 IN NS A.ROOT-SERVERS.NET.
. 336186 IN NS L.ROOT-SERVERS.NET.
. 336186 IN NS H.ROOT-SERVERS.NET.
. 336186 IN NS E.ROOT-SERVERS.NET.
. 336186 IN NS C.ROOT-SERVERS.NET.
. 336186 IN NS G.ROOT-SERVERS.NET.
. 336186 IN NS B.ROOT-SERVERS.NET.
;; Received 272 bytes from 192.168.0.3#53(192.168.0.3) in 17 ms
ip6.arpa. 172800 IN NS NS-SEC.RIPE.NET.
ip6.arpa. 172800 IN NS NS2.LACNIC.NET.
ip6.arpa. 172800 IN NS SEC1.APNIC.NET.
ip6.arpa. 172800 IN NS NS.ICANN.ORG.
ip6.arpa. 172800 IN NS TINNIE.ARIN.NET.
;; Received 221 bytes from 2001:dc3::35#53(M.ROOT-SERVERS.NET) in 17 ms
4.0.1.0.0.2.ip6.arpa. 84600 IN NS ns2.lacnic.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS sec1.apnic.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS indigo.arin.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS ns-sec.ripe.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS sec3.apnic.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS dill.arin.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS epazote.arin.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS chia.arin.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS henna.arin.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS figwort.arin.net.
4.0.1.0.0.2.ip6.arpa. 84600 IN NS basil.arin.net.
;; Received 468 bytes from 2001:500:13::c7d4:35#53(TINNIE.ARIN.NET) in 92 ms
0.7.4.0.1.0.0.2.ip6.arpa. 10800 IN NS ns1.he.net.
0.7.4.0.1.0.0.2.ip6.arpa. 10800 IN NS ns3.he.net.
0.7.4.0.1.0.0.2.ip6.arpa. 10800 IN NS ns4.he.net.
0.7.4.0.1.0.0.2.ip6.arpa. 10800 IN NS ns5.he.net.
0.7.4.0.1.0.0.2.ip6.arpa. 10800 IN NS ns2.he.net.
;; Received 186 bytes from 192.41.162.32#53(epazote.arin.net) in 84 ms
d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. 4900 IN NS selma.sscorp.com.
d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. 4900 IN NS patty.sscorp.com.
;; Received 140 bytes from 2001:470:400::2#53(ns4.he.net) in 111 ms
7.b.1.5.6.2.e.f.f.f.9.2.c.0.2.0.0.0.0.e.d.7.2.c.0.7.4.0.1.0.0.2.ip6.arpa. 3600 IN PTR mars.sscorp.com.
;; Received 119 bytes from 2001:470:c27d:e000:88cb:fe1b:c4b0:92a1#53(selma.sscorp.com) in 133 ms
But obviously I have IPv6. IPv4 only resolvers won't be able to contact selma or patty to resolve your RDNS until/unless you add IPv4 addresses to those servers, or add a 3rd slave that has an IPv4.
Good, thanks.