SSU2 socket address errors

version: 2.3.0-1 on a router with both ipv4 and ipv6 addresses

happening about 10x/week, to be investigated, assigning to myself for now

ERROR [ Establisher] sport.udp.EstablishmentManager: Error in the establisher
java.lang.IllegalArgumentException: unsupported address type
	at java.base/java.net.DatagramPacket.setSocketAddress(DatagramPacket.java:356)
	at net.i2p.router.transport.udp.PacketBuilder2.buildTokenRequestPacket(PacketBuilder2.java:412)
	at net.i2p.router.transport.udp.EstablishmentManager.sendRequest(EstablishmentManager.java:1476)
	at net.i2p.router.transport.udp.EstablishmentManager.handleOutbound(EstablishmentManager.java:2546)
	at net.i2p.router.transport.udp.EstablishmentManager.access$1400(EstablishmentManager.java:69)
	at net.i2p.router.transport.udp.EstablishmentManager$Establisher.doPass(EstablishmentManager.java:3217)
	at net.i2p.router.transport.udp.EstablishmentManager$Establisher.run(EstablishmentManager.java:3175)
	at java.base/java.lang.Thread.run(Thread.java:833)
	at net.i2p.util.I2PThread.run(I2PThread.java:103)

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