ncat client gets stuck at first run
Hi,
The Alpine 3.8 (Virt) is running on our QEMU guest. The following is the
version information:
Welcome to Alpine Linux 3.8 Kernel 4.14.69-0-virt on an x86_64 (/dev/ttyS0)
We have nmap-ncat installed on it. While it always get stuck when ncat launched at first time.
alpine:~# ncat -v 100.100.100.4 80 --send-only Ncat: Version 7.70 ( https://nmap.org/ncat )
stuck here>
Until an error info is printed:
alpine:~# ncat -v 100.100.100.4 80 --send-only Ncat: Version 7.70 ( https://nmap.org/ncat ) Ncat: Connection refused.
Then the problem disappears, the subsequent ncat would respond
immediately:
alpine:~# ncat -v 100.100.100.4 80 --send-only Ncat: Version 7.70 ( https://nmap.org/ncat ) Ncat: Connection refused.
Thanks
Jianchun
(from redmine: issue id 9677, created on 2018-11-22)