[clamav-users] Strange Problem when trying update after reboot (Ubuntu 22.04.1 ClamAV 0.103.6)

[newcomer01]

Hi @ all,

i know, i have asked the same thing before some weeks.
But i will post this again.
When i fresh reboot my Ubuntu 22.04.1 at morning my script test at first if dns is available and only if it is, it starts the download from clamav sig-files.
But when i do this, i got this error messages:

> Thu Feb 16 08:06:11 2023 -> ClamAV update process started at Thu Feb 16 08:06:11 2023
> Thu Feb 16 08:06:11 2023 -> WARNING: Can't query current.cvd.clamav.net
> Thu Feb 16 08:06:11 2023 -> WARNING: Invalid DNS reply. Falling back to HTTP mode.
> Thu Feb 16 08:06:11 2023 -> Trying to retrieve CVD header from https://database.clamav.net/daily.cvd
> Thu Feb 16 08:06:11 2023 -> WARNING: remote_cvdhead: Download failed (6) Thu Feb 16 08:06:11 2023 -> WARNING:  Message: Couldn't resolve host name
> Thu Feb 16 08:06:11 2023 -> WARNING: Failed to get daily database version information from server: https://database.clamav.net
> Thu Feb 16 08:06:11 2023 -> ERROR: check_for_new_database_version: Failed to find daily database using server https://database.clamav.net.
> Thu Feb 16 08:06:11 2023 -> Trying again in 5 secs...
> Thu Feb 16 08:06:16 2023 -> Trying to retrieve CVD header from https://database.clamav.net/daily.cvd
> Thu Feb 16 08:06:16 2023 -> WARNING: remote_cvdhead: Download failed (6) Thu Feb 16 08:06:16 2023 -> WARNING:  Message: Couldn't resolve host name
> Thu Feb 16 08:06:16 2023 -> WARNING: Failed to get daily database version information from server: https://database.clamav.net
> Thu Feb 16 08:06:16 2023 -> ERROR: check_for_new_database_version: Failed to find daily database using server https://database.clamav.net.
> Thu Feb 16 08:06:16 2023 -> Trying again in 5 secs...
> Thu Feb 16 08:06:21 2023 -> Trying to retrieve CVD header from https://database.clamav.net/daily.cvd
> Thu Feb 16 08:06:21 2023 -> OK
> Thu Feb 16 08:06:21 2023 -> daily database available for download (remote version: 26813)
> Thu Feb 16 08:06:30 2023 -> Testing database: '/var/lib/clamav/tmp.a828aef201/clamav-83875921b32bc900edab2d0ee431fcad.tmp-daily.cvd' ...
> Thu Feb 16 08:06:37 2023 -> Database test passed.
> Thu Feb 16 08:06:37 2023 -> daily.cvd updated (version: 26813, sigs: 2020949, f-level: 90, builder: raynman)
> Thu Feb 16 08:06:37 2023 -> Trying to retrieve CVD header from https://database.clamav.net/main.cvd
> Thu Feb 16 08:06:37 2023 -> OK
> Thu Feb 16 08:06:37 2023 -> main database available for download (remote version: 62)
> Thu Feb 16 08:07:04 2023 -> Testing database: '/var/lib/clamav/tmp.a828aef201/clamav-35347411896e0523e7b74f2c91338b97.tmp-main.cvd' ...
> Thu Feb 16 08:07:10 2023 -> Database test passed.
> Thu Feb 16 08:07:10 2023 -> main.cvd updated (version: 62, sigs: 6647427, f-level: 90, builder: sigmgr)
> Thu Feb 16 08:07:10 2023 -> Trying to retrieve CVD header from https://database.clamav.net/bytecode.cvd
> Thu Feb 16 08:07:10 2023 -> OK
> Thu Feb 16 08:07:10 2023 -> bytecode database available for download (remote version: 333)
> Thu Feb 16 08:07:11 2023 -> Testing database: '/var/lib/clamav/tmp.a828aef201/clamav-2f58bc478b2afd84ba98c4d288a63ac1.tmp-bytecode.cvd' ...
> Thu Feb 16 08:07:11 2023 -> Database test passed.
> Thu Feb 16 08:07:11 2023 -> bytecode.cvd updated (version: 333, sigs: 92, f-level: 63, builder: awillia2)
> Thu Feb 16 09:46:56 2023 -> --------------------------------------

Is there another way to solve the issue?
Current i have set an sleep 60 to work arround.

This is the first act of my script before I try to download signatures:

>         if [ "$(host -W 60 -t TXT "current.cvd.clamav.net")" != "" ]; then
>
>             # standardwert fuer libs update std - 2
>             LIBS_UPD_STD="2"
>
>             # standardwert fuer libs uli std - 5
>             LIBS_ULI_STD="5"
>
>             # update anstossen - 1 oder 0
>             START_FRESHCLAM="1"
>
>             # setze wert fuer netzwerkverbindung - 0 nicht vorhanden, 1 vorhanden
>             NETZWERK_VORHANDEN="1"
>
>         # falls nicht innerhalb von xx sekunden der descriptive txt geholt werden kann
>         elif [ "$(host -W 60 -t TXT "current.cvd.clamav.net")" = "" ]; then
>
>             # standardwert fuer libs update std - 2
>             LIBS_UPD_STD="2"
>
>             # standardwert fuer libs uli std - 5
>             LIBS_ULI_STD="5"
>
>             # update anstossen - 1 oder 0
>             START_FRESHCLAM="0"
>
>             # setze wert fuer netzwerkverbindung - 0 nicht vorhanden, 1 vorhanden
>             NETZWERK_VORHANDEN="0"
>
>         fi

and only when "$NETZWERK_VORHANDEN" -eq "1" (NETZWERK_VORHANDEN is german = NETWORK_AVAILABLE) I start update (what is this time), but it seems that clamav CDN have a problem in case.
But why?
My code checks if dns from current.cvd.clamav.net  is available and starts, but freshclam says can't resolve host name.

kind regards
Marc