Re: Fwd: 10-BETA : some network issues

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

	Happy new year.

	I'm trying to install a virtual NetBSD on qemu (without success, my
dedicated workstation usually runs Xen and doesn't have screen. I have
installed wdm to obtain a remote session, but just after
authentification, X session is closed...).

	That being said, I have done another constatation.

	NetBSD server runs ntpd:
legendre:[~] > ps auwx | grep ntp
root        1495  0,0  0,1   31280   16560 ?      Ss   mar.10AM
0:12.14 /usr/sbin/ntpd -p /var/run/ntpd.pid
bertrand   15903  0,0  0,0   20288    1868 pts/2  O+    10:57AM
0:00.01 grep ntp

	But clients cannot connect to this server when server runs NetBSD-10.
With a -9 kernel, time synchronization runs fine. Clients can use a ntp
server through VPN.

	From a client, nmap shows:

Root hilbert:[~] > nmap -sU legendre
Starting Nmap 7.92 ( https://nmap.org ) at 2023-01-01 10:54 CET
Nmap scan report for legendre (192.168.10.128)
Host is up (0.00012s latency).
rDNS record for 192.168.10.128: legendre.systella.fr
Not shown: 988 closed udp ports (port-unreach)
PORT     STATE         SERVICE
53/udp   open          domain
67/udp   open|filtered dhcps
69/udp   open|filtered tftp
111/udp  open          rpcbind
123/udp  open          ntp
177/udp  open          xdmcp
1019/udp open|filtered unknown
1020/udp open|filtered unknown
1021/udp open|filtered exp1
1022/udp open|filtered exp2
1023/udp open|filtered unknown
2049/udp open          nfs
MAC Address: 68:05:CA:02:B2:59 (Intel Corporate)

Nmap done: 1 IP address (1 host up) scanned in 172.47 seconds

	On server, a tcpdump shows:

legendre# tcpdump -p -i lagg0 udp and port 123
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lagg0, link-type EN10MB (Ethernet), capture size 262144 bytes
11:00:49.661351 IP hilbert.systella.fr.ntp > legendre.systella.fr.ntp:
NTPv4, Client, length 48
11:01:27.033602 IP schwarz.systella.fr.ntp > legendre.systella.fr.ntp:
NTPv4, Client, length 48
11:01:27.776483 IP hilbert.systella.fr.ntp > legendre.systella.fr.ntp:
NTPv4, Client, length 48

and no answer from server...

	It's not related to UDP packet as other daemons (tftp, nfs, rpcbind...)
run fine.

	Regards,

	JB