or… you have multiple accel-pppd processes?

only one process

ifname |      username       |     ip      | type  | state  |    calling-sid    | rx-bytes  | tx-bytes  |  uptime
--------+---------------------+-------------+-------+--------+-------------------+-----------+-----------+----------
ppp1   | 1240012428          | 10.26.0.2   | pppoe | active | 98:da:c4:d5:79:c1 | 564.9 KiB | 244.7 KiB | 01:00:32
ppp0   | 1240011399          | 10.26.0.1   | pppoe | active | 04:95:e6:39:cb:e8 | 11.8 MiB  | 63.8 MiB  | 01:00:32
ppp2   | 1240012386          | 10.26.0.3   | pppoe | active | d8:07:b6:10:1b:a3 | 5.8 MiB   | 258.8 MiB | 01:00:32

different usernames. why?

you said “no one"

this is a 3 customer

the problem is not have options to change what is send to Nas-Port-ID

only will send pppXXX

you can rename the interface via Access-Accept message

not options to send interface from where is come user

how ?

send NAS-Port-Id attribute in Access-Accept message

how to setup this

you need to setup it in your RADIUS server

check the docs related to your RADIUS server

i see NAS-Port-id

[2020-10-27 18:00:37]:  info: ppp76: send [RADIUS(1) Accounting-Request id=1 <User-Name "1240015163"> <NAS-Identifier "accel-ppp"> <NAS-IP-Address 10.10.10.1> <NAS-Port 76> <NAS-Port-Id "ppp76"> <NAS-Port-Type Virtual> <Service-Type Framed-User> <Framed-Protocol PPP> <Calling-Station-Id "08:97:98:b5:0c:1e"> <Called-Station-Id "ac:1f:6b:a4:0a:22"> <Class 0x6375693d313234303031353136332c736b3d3539317a6a627573336536782c626b69643d31343232343332372c626b7269643d312c6d763d2d312c6d743d3630353330332c676d743d3630343830302c73703d313231352c73723d2c61633d312c75693d3934343330392c6363693d302c63633d2c61733d312c636f3d2c64623d35313230302c75623d35313230302c63626b69643d3134323234333238> <Acct-Status-Type Start> <Acct-Authentic RADIUS> <Acct-Session-Id "7e8828d289e21aee"> <Acct-Session-Time 0> <Acct-Input-Octets 0> <Acct-Output-Octets 0> <Acct-Input-Packets 0> <Acct-Output-Packets 0> <Acct-Input-Gigawords 0> <Acct-Output-Gigawords 0> <Framed-IP-Address 10.26.0.120>

in this i need to set NAS-Port-id to be interface where come user not ppp76

a set interface eth0.222

Interface eth0.222 direct to customer or public?