panic: missing addr for node in table
goroutine 12 [running]:
github.com/anacrolix/dht.(*table).dropNode(0xc420089c40, 0xc420b83580)
/root/gopath/src/github.com/anacrolix/dht/table.go:18 +0x189
github.com/anacrolix/dht.(*Server).getNode.func1(0xc420b83580, 0xc421f183c0)
/root/gopath/src/github.com/anacrolix/dht/server.go:401 +0x9e
github.com/anacrolix/dht.(*bucket).EachNode(0xc420089d10, 0xc423267da8, 0x9a6e89e182121c52)
/root/gopath/src/github.com/anacrolix/dht/bucket.go:13 +0x9b
github.com/anacrolix/dht.(*Server).getNode(0xc420089c00, 0xa65200, 0xc4243e86c0, 0xfd6dc2058a36c336, 0x9a6e89e182121c52, 0x11542caa4, 0x0, 0x7f0fc3e799e0, 0x0)
/root/gopath/src/github.com/anacrolix/dht/server.go:399 +0x19e
github.com/anacrolix/dht.(*Server).processPacket(0xc420089c00, 0xc422058000, 0x68, 0x10000, 0xa65200, 0xc4243e86c0)
/root/gopath/src/github.com/anacrolix/dht/server.go:217 +0x406
github.com/anacrolix/dht.(*Server).serve(0xc420089c00, 0x0, 0x0)
/root/gopath/src/github.com/anacrolix/dht/server.go:262 +0x233
github.com/anacrolix/dht.NewServer.func1(0xc4200820e0)
/root/gopath/src/github.com/anacrolix/dht/server.go:150 +0x32
created by github.com/anacrolix/dht.NewServer
/root/gopath/src/github.com/anacrolix/dht/server.go:149 +0x2cd