seed.tbtc.petertodd.net testnet3 DNS seed stuck serving bad addresses #36072

willcl-ark commented at 9:37 PM on August 24, 2026: member

The testnet3 DNS seed seed.tbtc.petertodd.net is stuck serving old and static data, perhaps it has no peers or has otherwise gone stale itself somehow.

For a number of days I have only seen it return 37 unique ip addresses (24 ipv4, 13 ipv6) in total, with only 1 (ipv6) node actually contactable.

<details> <summary>example ipv4 query</summary>

❯ dig seed.tbtc.petertodd.net A

; <<>> DiG 9.20.26 <<>> seed.tbtc.petertodd.net A
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40041
;; flags: qr rd ra; QUERY: 1, ANSWER: 24, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;seed.tbtc.petertodd.net.       IN      A

;; ANSWER SECTION:
seed.tbtc.petertodd.net. 3600   IN      A       5.188.119.196
seed.tbtc.petertodd.net. 3600   IN      A       5.189.162.76
seed.tbtc.petertodd.net. 3600   IN      A       13.229.104.97
seed.tbtc.petertodd.net. 3600   IN      A       18.162.45.10
seed.tbtc.petertodd.net. 3600   IN      A       23.93.101.158
seed.tbtc.petertodd.net. 3600   IN      A       34.91.255.249
seed.tbtc.petertodd.net. 3600   IN      A       35.207.3.50
seed.tbtc.petertodd.net. 3600   IN      A       39.98.193.129
seed.tbtc.petertodd.net. 3600   IN      A       51.210.208.202
seed.tbtc.petertodd.net. 3600   IN      A       51.210.220.135
seed.tbtc.petertodd.net. 3600   IN      A       64.190.113.17
seed.tbtc.petertodd.net. 3600   IN      A       71.13.92.62
seed.tbtc.petertodd.net. 3600   IN      A       72.211.1.222
seed.tbtc.petertodd.net. 3600   IN      A       88.198.91.246
seed.tbtc.petertodd.net. 3600   IN      A       99.192.223.18
seed.tbtc.petertodd.net. 3600   IN      A       122.248.200.20
seed.tbtc.petertodd.net. 3600   IN      A       132.145.213.181
seed.tbtc.petertodd.net. 3600   IN      A       138.201.51.42
seed.tbtc.petertodd.net. 3600   IN      A       142.44.138.161
seed.tbtc.petertodd.net. 3600   IN      A       161.35.211.215
seed.tbtc.petertodd.net. 3600   IN      A       178.21.118.96
seed.tbtc.petertodd.net. 3600   IN      A       185.180.220.12
seed.tbtc.petertodd.net. 3600   IN      A       188.40.164.205
seed.tbtc.petertodd.net. 3600   IN      A       204.16.241.8

;; Query time: 1040 msec
;; SERVER: 100.100.100.100#53(100.100.100.100) (UDP)
;; WHEN: Mon Aug 24 13:21:55 BST 2026
;; MSG SIZE  rcvd: 436

</details> [@petertodd](/bitcoin-bitcoin/contributor/petertodd/) is this something which you can address? If not then it could be worth removing the testnet3 seed to help bootstrap nodes.

petertodd commented at 6:10 PM on August 25, 2026: contributor

I restarted it. Let me know if that fixes it.

willcl-ark commented at 8:00 AM on August 26, 2026: member

Great that does appear to have done the trick; thanks!

willcl-ark closed this on Aug 26, 2026