[...]
05:45:44.428 CRIT  [ Establisher] sport.udp.EstablishmentManager: Error in the establisher
java.lang.NullPointerException
        at net.i2p.router.transport.udp.UDPEndpoint.send(UDPEndpoint.java:77)
        at net.i2p.router.transport.udp.UDPTransport.send(UDPTransport.java:606)
        at net.i2p.router.transport.udp.EstablishmentManager.sendRequest(EstablishmentManager.java:433)
        at net.i2p.router.transport.udp.EstablishmentManager.handleOutbound(EstablishmentManager.java:731)
        at net.i2p.router.transport.udp.EstablishmentManager.doPass(EstablishmentManager.java:791)
        at net.i2p.router.transport.udp.EstablishmentManager.access$500(EstablishmentManager.java:31)
        at net.i2p.router.transport.udp.EstablishmentManager$Establisher.run(EstablishmentManager.java:776)
        at java.lang.Thread.run(Thread.java:595)
05:45:44.429 CRIT  [ Establisher] sport.udp.EstablishmentManager: Error in the establisher
java.lang.NullPointerException
        at net.i2p.router.transport.udp.UDPEndpoint.send(UDPEndpoint.java:77)
        at net.i2p.router.transport.udp.UDPTransport.send(UDPTransport.java:606)
        at net.i2p.router.transport.udp.EstablishmentManager.sendRequest(EstablishmentManager.java:433)
        at net.i2p.router.transport.udp.EstablishmentManager.handleOutbound(EstablishmentManager.java:731)
        at net.i2p.router.transport.udp.EstablishmentManager.doPass(EstablishmentManager.java:791)
        at net.i2p.router.transport.udp.EstablishmentManager.access$500(EstablishmentManager.java:31)
        at net.i2p.router.transport.udp.EstablishmentManager$Establisher.run(EstablishmentManager.java:776)
        at java.lang.Thread.run(Thread.java:595)
        at net.i2p.util.I2PThread.run(I2PThread.java:64)
[...]