CRIT [ Establisher] sport.udp.EstablishmentManager: Error in the establisher

[sponge]

Router version 0.8.12-6
Happened after ~8.5 days router uptime.
Happened only once, so far.

INFO   | jvm 3    | 2012/01/28 15:54:24 | CRIT  [ Establisher] sport.udp.EstablishmentManager: Error in the establisher
INFO   | jvm 3    | 2012/01/28 15:54:24 | java.lang.NullPointerException
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.router.transport.udp.InboundEstablishState.getSentY(InboundEstablishState.java:134)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.router.transport.udp.InboundEstablishState.verifyIdentity(InboundEstablishState.java:305)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.router.transport.udp.InboundEstablishState.getConfirmedIdentity(InboundEstablishState.java:268)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.router.transport.udp.EstablishmentManager.handleInbound(EstablishmentManager.java:860)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.router.transport.udp.EstablishmentManager.doPass(EstablishmentManager.java:1069)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.router.transport.udp.EstablishmentManager.access$1000(EstablishmentManager.java:36)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.router.transport.udp.EstablishmentManager$Establisher.run(EstablishmentManager.java:1055)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at java.lang.Thread.run(Thread.java:662)
INFO   | jvm 3    | 2012/01/28 15:54:24 |       at net.i2p.util.I2PThread.run(I2PThread.java:85)

[zzz]

dup of #406