Devices missing in scan

[thesebastianf]

Hey I tried v1 and v2 of WYL.
On both it doesnt find some devices on my lan.
Those are devices by LAN cable, 24/7 online and I can ping them.
Any hints why or what I could do to get any device discovered?

screenshot is sorted by IP .. e.g. all devices 192.168.1.1- x.x.x.5 are missing.
I ping 2 of those in the cmd shell

[fraintt]

I have the same problem, that I cannot ping and the scan cannot find some of my devices.. I can ping the device from the container console

[mochaslave]

The scan mechanism is based on arp-scan. As you can see, the binary file has been copied into the docker image and executed by this tool.
Since the arp-scan has not been released version for a long time, I built the latest master branch on my Raspberry Pi 5 to compare the 1.10.0 results.

Here are my experimental results:

Setup	Platform	arp-scan Version	Result
Brew install arp-scan	Mac M1	1.10.0	No missing
WatchYourLAN	Pi 5	1.10.0	Missing some hosts
Execute arp-scan in WatchYourLAN container	Pi 5	1.10.0	Missing some hosts
Build binary on Pi 5	Pi 5	1.10.1-git	Missing some hosts

Hard to say what's factor cause this issue, but it should be the arp-scan problem.

[StealUrKill]

I am having similar issues. Except in the console of the docker, it shows an IP address. lets say 192.168.1.23 and pulls the info but it is not displayed in the webpage.

[StealUrKill]

The scan mechanism is based on arp-scan. As you can see, the binary file has been copied into the docker image and executed by this tool. Since the arp-scan has not been released version for a long time, I built the latest master branch on my Raspberry Pi 5 to compare the 1.10.0 results.

Here are my experimental results:

Setup Platform arp-scan Version Result
Brew install arp-scan Mac M1 1.10.0 No missing
WatchYourLAN Pi 5 1.10.0 Missing some hosts
Execute arp-scan in WatchYourLAN container Pi 5 1.10.0 Missing some hosts
Build binary on Pi 5 Pi 5 1.10.1-git Missing some hosts
Hard to say what's factor cause this issue, but it should be the arp-scan problem.

I built it on linux and tried copying it to the docker but it is missing a bunch of stuff

Successfully copied 222exec -it WYL /bin/sh /app # ldd /usr/bin/arp-scan /lib64/ld-linux-x86-64.so.2 (0x7fd24dfee000) Error loading shared library libpcap.so.0.8: No such file or directory (needed by /usr/bin/arp-scan) libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x7fd24dfee000) Error relocating /usr/bin/arp-scan: pcap_set_promisc: symbol not found Error relocating /usr/bin/arp-scan: pcap_findalldevs: symbol not found Error relocating /usr/bin/arp-scan: pcap_sendpacket: symbol not found Error relocating /usr/bin/arp-scan: pcap_dispatch: symbol not found Error relocating /usr/bin/arp-scan: pcap_close: symbol not found Error relocating /usr/bin/arp-scan: __printf_chk: symbol not found Error relocating /usr/bin/arp-scan: pcap_geterr: symbol not found Error relocating /usr/bin/arp-scan: pcap_statustostr: symbol not found Error relocating /usr/bin/arp-scan: __vsnprintf_chk: symbol not found Error relocating /usr/bin/arp-scan: pcap_compile: symbol not found Error relocating /usr/bin/arp-scan: pcap_get_selectable_fd: symbol not found Error relocating /usr/bin/arp-scan: pcap_set_timeout: symbol not found Error relocating /usr/bin/arp-scan: pcap_set_immediate_mode: symbol not found Error relocating /usr/bin/arp-scan: pcap_freealldevs: symbol not found Error relocating /usr/bin/arp-scan: pcap_stats: symbol not found Error relocating /usr/bin/arp-scan: pcap_set_snaplen: symbol not found Error relocating /usr/bin/arp-scan: pcap_lookupnet: symbol not found Error relocating /usr/bin/arp-scan: pcap_open_offline: symbol not found Error relocating /usr/bin/arp-scan: pcap_create: symbol not found Error relocating /usr/bin/arp-scan: pcap_dump_open: symbol not found Error relocating /usr/bin/arp-scan: pcap_datalink: symbol not found Error relocating /usr/bin/arp-scan: pcap_activate: symbol not found Error relocating /usr/bin/arp-scan: pcap_setfilter: symbol not found Error relocating /usr/bin/arp-scan: pcap_datalink_val_to_name: symbol not found Error relocating /usr/bin/arp-scan: pcap_setnonblock: symbol not found Error relocating /usr/bin/arp-scan: pcap_freecode: symbol not found Error relocating /usr/bin/arp-scan: pcap_dump: symbol not found Error relocating /usr/bin/arp-scan: pcap_lib_version: symbol not found Error relocating /usr/bin/arp-scan: __snprintf_chk: symbol not found Error relocating /usr/bin/arp-scan: __fdelt_chk: symbol not found Error relocating /usr/bin/arp-scan: pcap_dump_close: symbol not found

I was able to get it down to this by installing apk add libpcap and doing ln -s /usr/lib/libpcap.so.1 /usr/lib/libpcap.so.0.8 I was able to get this

/app # ldd /usr/bin/arp-scan /lib64/ld-linux-x86-64.so.2 (0x7fb1f8231000) libpcap.so.0.8 => /usr/lib/libpcap.so.0.8 (0x7fb1f81e1000) libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x7fb1f8231000) Error relocating /usr/bin/arp-scan: __printf_chk: symbol not found Error relocating /usr/bin/arp-scan: __vsnprintf_chk: symbol not found Error relocating /usr/bin/arp-scan: __snprintf_chk: symbol not found Error relocating /usr/bin/arp-scan: __fdelt_chk: symbol not found
So I decided to see if updating and building would work

apk update && apk upgrade
apk add build-base autoconf automake libpcap-dev
wget https://github.com/royhills/arp-scan/archive/refs/heads/master.zip
unzip master.zip
cd arp-scan-master
autoreconf --install
./configure
make
make install
/usr/local/bin # cp /usr/local/bin/arp-scan /usr/bin/arp-scan
cp /usr/local/bin/get-oui /usr/bin/get-oui
cp /usr/local/bin/arp-fingerprint /usr/bin/arp-fingerprint

Building inside the docker puts it in /usr/local/bin for some reason. but copying it runs with no errors and it still shows the same. Some are missing still.