Failed to open udp listener error="protocol not available" about nebula

[missdeer]

issue still exists:

nebula/udp_linux.go

Line 72 in fd8ad5d

if err = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {

[nbrownus]

Can you give us the output of lscpu and/or /proc/cpuinfo

[missdeer]

pi@bananapi-r1:~ $ lscpu
Architecture:          armv7l
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    2
Socket(s):             1
CPU max MHz:           1008.0000
CPU min MHz:           60.0000
pi@bananapi-r1:~ $ cat /proc/cpuinfo
Processor       : ARMv7 Processor rev 4 (v7l)
processor       : 0
BogoMIPS        : 1816.98

processor       : 1
BogoMIPS        : 1823.53

Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xc07
CPU revision    : 4

Hardware        : sun7i
Revision        : 0000
Serial          : 1651665408c27555
Chipid          : 16516654-80528988-53554848-08c27555

[missdeer]

nebula/udp_linux.go

Line 72 in 764692c

if err = syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, 0x0F, 1); err != nil {

I found that removing this block does works for me.

[missdeer]

nebula/udp_linux.go

Line 72 in 764692c

if err = syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, 0x0F, 1); err != nil {

nebula/udp_linux.go

Line 82 in 764692c

if err = syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {

duplicated code in different conditions

[nbrownus]

Nice find! I was just removing that in another PR for the exact same reason.

[nbrownus]

This should no longer be an issue, thanks for reporting!