failed to bind udp address

[EReeves]

Unsure what's wrong. Maybe I set up my tun device wrong, I just added it as normal.

18-08-04 04:50:58] starting muon server
[18-08-04 04:50:58] using tun device: tun0
[18-08-04 04:50:58] failed to bind udp address

# muon server config

# user to set privilege to
user=evan

# server or client
mode=server

# server
server=0.0.0.0
port=14333-14666


# secret key for crypto
#   run `dd if=/dev/random bs=1 count=9 | md5sum' to create one
key= . . .


# TUN device name, tunX for linux, utunX for darwin
tunif=tun0

# MTU of TUN device
#   Ethernet: 1500 - 20(IPv4, or 40 for IPv6) - 8(UDP) - 20(muon)
#   PPPoE: 1492 - 20(IPv4, or 40 for IPv6) - 8(UDP) - 20(muon)
mtu=1400

# IPv4 address of TUN device, CIDR notation
address=10.10.10.0/31

# IPv6 address of TUN device, CIDR notation
#address6=

# enable NAT or not
nat=no

Hoping someone can share some insight in to how I should start solving this.

Thanks