Arch Linux ARM refusing pings after application crash

[Lestrad]

Hello to all. I am running Arch Linux ARM on a Wandboard Quad that serve as a media server. Media server services are provided by LMS (Lyrion Media Server, formerly Logitech Media server). One of the plug-ins of LMS is repeatedly crashing, and now the Wandboard is unresponsive on my LAN. I am able to connect via the serial debug port, however. I was able to restart LMS, but the Wandboard is still not pingable.

Does or can Arch ARM block incoming packets after an application crash and core dump? Is there a way to make the device accessible again without rebooting?

TIA for any help. I am not a regular Linux user. Below is an excerpt from the output of journalctl at the time of the crash:
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[quote]
févr. 19 04:10:02 alarm slimserver.pl[480]: [25-02-19 04:10:02.5364] Plugins::UPnPBridge::Squeeze2upnp::beat (181) load failed or crashed ... restarting
févr. 19 04:10:02 alarm slimserver.pl[8950]: [04:10:02.606] main:1826 Starting squeeze2upnp version: v3.3.5 (Feb 1 2024 @ 22:06:10)
févr. 19 04:10:02 alarm audit[8950]: ANOM_ABEND auid=4294967295 uid=974 gid=974 ses=4294967295 subj=_ pid=8950 comm="squeeze2upnp-li" exe="/opt/logitechmediaserver-git/cache/InstalledPlugins/Plugins/UPnPBridge/Bin/squeeze2upnp-linux-arm" sig=4 res=1
févr. 19 04:10:02 alarm kernel: audit: type=1701 audit(1739934602.630:16840): auid=4294967295 uid=974 gid=974 ses=4294967295 subj=_ pid=8950 comm="squeeze2upnp-li" exe="/opt/logitechmediaserver-git/cache/InstalledPlugins/Plugins/UPnPBridge/Bin/squeeze2upnp-linux-arm" sig=4 res=1
févr. 19 04:10:02 alarm audit: BPF prog-id=4774 op=LOAD
févr. 19 04:10:02 alarm audit: BPF prog-id=4775 op=LOAD
févr. 19 04:10:02 alarm systemd[1]: Started Process Core Dump (PID 8952/UID 0).
févr. 19 04:10:02 alarm kernel: audit: type=1334 audit(1739934602.730:16841): prog-id=4774 op=LOAD
févr. 19 04:10:02 alarm kernel: audit: type=1334 audit(1739934602.730:16842): prog-id=4775 op=LOAD
févr. 19 04:10:02 alarm kernel: audit: type=1130 audit(1739934602.738:16843): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=_ msg='unit=systemd-coredump@2382-8952-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
févr. 19 04:10:02 alarm audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=_ msg='unit=systemd-coredump@2382-8952-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
févr. 19 04:10:10 alarm systemd-coredump[8953]: Process 8950 (squeeze2upnp-li) of user 974 dumped core.

Stack trace of thread 8951:
#0 0x0000000000048ff8 n/a (squeeze2upnp-linux-arm + 0x38ff8)
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