get snmpv2 data using by tcp failed

[fish0373]

Host operating system: output of uname -a

Linux 5.15.0-105-generic #115-Ubuntu SMP Mon Apr 15 09:52:04 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

snmp_exporter version: output of snmp_exporter -version

0.25.0

What device/snmpwalk OID are you using?

no

If this is a new device, please link to the MIB(s).

no

What did you do that produced an error?

In prometheus configuration target is tcp://192.168.100.1 (I need use TCP to get data)
When I using auth for version 2(GETBULK) to get snmp data, the exporter return error.

But, when I using auth for version 1(GETNEXT), then it work.
So, I think tcp failed on version 2 is a bug?

What did you expect to see?

version 2 result should be same with version 1

What did you see instead?

An error has occurred while serving metrics:

error collecting metric Desc{fqName: "snmp_error", help: "Error scraping target", const Labels: {module="if_mib"}, variableLabels: {}}: error walking target 192.168.100.1: invalid packet header