{"type":"rich","version":"1.0","author_name":"npub17ty4mumkv43w8wtt0xsz2jypck0gvw0j8xrcg6tpea25z2nh7meqf4qgyd","author_url":"https://nostr.ae/npub17ty4mumkv43w8wtt0xsz2jypck0gvw0j8xrcg6tpea25z2nh7meqf4qgyd","provider_name":"njump","provider_url":"https://nostr.ae","html":"📅 Original date posted:2011-08-03\n🗒️ Summary of this message: Many bad nodes are appearing in the DNS seeds, slowing down peer bringup for Android apps. A custom DNS server may help resolve the issue.\n📝 Original message:This is expected to happen from time to time of course as it's inherently\nracy, but there are a *lot* of bad nodes appearing in the DNS seeds.\n\n$ nmap -oG /tmp/x -p 8333 `dig +short bitseed.bitcoin.org.uk\ndnsseed.bluematt.me bitseed.xf2.org`\n...\nNmap done: 48 IP addresses (25 hosts up) scanned in 9.80 seconds\n\n$ grep -c 'closed' /tmp/x\n6\n\nSo of 48 IPs returned only 19 are actually usable. This is slowing down peer\nbringup for the Android apps, which don't currently save the addresses of\nlast-used peers (yes, I know we should fix this).\n\nI was talking to a friend a few days ago about Bitcoin, he seemed\ninterested. I'm hoping he might take on DNS seeding as a project. A custom\nDNS server that watches the network to find long-lived peers that run the\nlatest version would be helpful for resolving this kind of thing.\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20110803/2d5c0a64/attachment.html\u003e"}