here is the bridge:
r2#
r2#
r2#show bridge 1
r2#show bridge 1
 |~~~~~~~~~~~|~~~~~~|~~~~~~|~~~~~|~~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~|
 |                         | packet           | byte               |     |
 | iface     | fwd  | phys | tx  | rx  | drop | tx   | rx   | drop | grp |
 |-----------|------|------|-----|-----|------|------|------|------|-----|
 | brprt bvi |      |      |     |     |      |      |      |      |     |
 | ethernet1 | true | true | 87  | 78  | 0    | 5712 | 5114 | 0    |     |
 | ethernet2 | true | true | 107 | 107 | 0    | 7012 | 7024 | 0    |     |
 |___________|______|______|_____|_____|______|______|______|______|_____|
 |~~~~~~~~~~~~~~~~|~~~~~~~~~~~|~~~~~~~~|~~~~~~~~~~|~~~~|~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|
 |                                                | packet         | byte               |
 | addr           | iface     | static | time     | tx | rx | drop | tx   | rx   | drop |
 |----------------|-----------|--------|----------|----|----|------|------|------|------|
 | 0000.0000.4444 | ethernet2 | false  | 00:00:15 | 48 | 53 | 0    | 3168 | 3494 | 0    |
 | 004b.1f30.3d2e | bvi       | false  | 00:00:15 | 74 | 78 | 0    | 4824 | 5096 | 0    |
 | 0068.7841.2048 | ethernet2 | false  | 00:00:15 | 48 | 54 | 0    | 3168 | 3530 | 0    |
 | 0071.571b.2f2a | ethernet1 | false  | 00:00:15 | 75 | 78 | 0    | 4854 | 5114 | 0    |
 |________________|___________|________|__________|____|____|______|______|______|______|
r2#
r2#
here is the interface:
r2#
r2#
r2#show inter bvi1 full
r2#show inter bvi1 full
bvi1 is up
 description:
 state changed 3 times, last at 2022-08-16 21:04:03, 00:00:15 ago
 last packet input 00:00:00 ago, output 00:00:00 ago, drop never ago
 type is bridged, hwaddr=004b.1f30.3d2e, mtu=1500, bw=100mbps, vrf=v1
 ipv4 address=1.1.1.2/24, mask=255.255.255.0, ifcid=853203420
 ipv6 address=1234::2/16, mask=ffff::, ifcid=35010174
 received 87 packets (5730 bytes) dropped 0 packets (0 bytes)
 transmitted 78 packets (5096 bytes) macsec=false sgt=false
 |~~~~~~~|~~~~|~~~~|~~~~~~|~~~~~|~~~~~|~~~~~~|
 |       | packet         | byte             |
 | time  | tx | rx | drop | tx  | rx  | drop |
 |-------|----|----|------|-----|-----|------|
 | 1sec  | 10 | 10 | 0    | 660 | 660 | 0    |
 | 1min  | 0  | 0  | 0    | 0   | 0   | 0    |
 | 1hour | 0  | 0  | 0    | 0   | 0   | 0    |
 |_______|____|____|______|_____|_____|______|
 |~~~~~~~~|~~~~~~~|~~~~~~~~~|~~~~|~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|
 |                          | packet         | byte               |
 | type   | value | handler | tx | rx | drop | tx   | rx   | drop |
 |--------|-------|---------|----|----|------|------|------|------|
 | ethtyp | 0000  | null    | 0  | 0  | 0    | 0    | 0    | 0    |
 | ethtyp | 0800  | ip4     | 42 | 42 | 0    | 2772 | 2772 | 0    |
 | ethtyp | 0806  | arp4    | 3  | 6  | 0    | 90   | 216  | 0    |
 | ethtyp | 86dd  | ip6     | 33 | 39 | 0    | 2234 | 2742 | 0    |
 |________|_______|_________|____|____|______|______|______|______|
 |~~~~~|~~~~|~~~~|
 | who | tx | rx |
 |-----|----|----|
 |_____|____|____|
 |~~~~~~~|~~~~~~|~~~~~~|
 | proto | pack | byte |
 |-------|------|------|
 | 0     | 3    | 90   |
 | 1     | 42   | 2772 |
 | 58    | 33   | 2234 |
 |_______|______|______|
 |~~~~~~~~~~~~|~~~~|~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|
 |            | packet         | byte               |
 | size       | tx | rx | drop | tx   | rx   | drop |
 |------------|----|----|------|------|------|------|
 | 0-255      | 78 | 87 | 0    | 5096 | 5730 | 0    |
 | 256-511    | 0  | 0  | 0    | 0    | 0    | 0    |
 | 512-767    | 0  | 0  | 0    | 0    | 0    | 0    |
 | 768-1023   | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1024-1279  | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1280-1535  | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1536-1791  | 0  | 0  | 0    | 0    | 0    | 0    |
 | 1792-65535 | 0  | 0  | 0    | 0    | 0    | 0    |
 |____________|____|____|______|______|______|______|
 |~~~~~~~|~~~~~|~~~~~|~~~~~~|~~~~~~|~~~~~~|~~~~~~|
 |       | packet           | byte               |
 | class | cos | exp | prec | cos  | exp  | prec |
 |-------|-----|-----|------|------|------|------|
 | 0     | 78  | 78  | 78   | 5096 | 5096 | 5096 |
 | 1     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 2     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 3     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 4     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 5     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 6     | 0   | 0   | 0    | 0    | 0    | 0    |
 | 7     | 0   | 0   | 0    | 0    | 0    | 0    |
 |_______|_____|_____|______|______|______|______|
       21.1k|   #
       19.0k|   #
       16.8k|   #
       14.7k|   #
       12.6k|   #
       10.5k|#  #
        8448|#  #          #
        6336|#  #          #
        4224|# #######   ###
        2112|# #######   ###
           0|############################################################
         bps|0---------10--------20--------30--------40--------50-------- seconds
          10|
           9|
           8|
           7|
           6|
           5|
           4|
           3|
           2|
           1|
           0|############################################################
         bps|0---------10--------20--------30--------40--------50-------- minutes
          10|
           9|
           8|
           7|
           6|
           5|
           4|
           3|
           2|
           1|
           0|############################################################
         bps|0---------10--------20--------30--------40--------50-------- hours
r2#
r2#
here is the arp:
r2#
r2#
r2#show ipv4 arp bvi1
r2#show ipv4 arp bvi1
 |~~~~~~~~~~~~~~~~|~~~~~~~~~|~~~~~~~~~~|~~~~~~~~|
 | mac            | address | time     | static |
 |----------------|---------|----------|--------|
 | 0071.571b.2f2a | 1.1.1.1 | 00:00:14 | false  |
 | 0068.7841.2048 | 1.1.1.3 | 00:00:14 | false  |
 | 0000.0000.4444 | 1.1.1.4 | 00:00:14 | false  |
 |________________|_________|__________|________|
r2#
r2#
here are the neighbors:
r2#
r2#
r2#show ipv6 neigh bvi1
r2#show ipv6 neigh bvi1
 |~~~~~~~~~~~~~~~~|~~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~~~~~~|~~~~~~~~|~~~~~~~~|
 | mac            | address                  | time     | static | router |
 |----------------|--------------------------|----------|--------|--------|
 | 0071.571b.2f2a | 1234::1                  | 00:00:15 | false  | false  |
 | 0068.7841.2048 | 1234::3                  | 00:00:15 | false  | false  |
 | 0000.0000.4444 | 1234::4                  | 00:00:15 | false  | false  |
 | 0000.0000.4444 | fe80::200:ff:fe00:4444   | 00:00:15 | false  | true   |
 | 0068.7841.2048 | fe80::268:78ff:fe41:2048 | 00:00:15 | false  | true   |
 | 0071.571b.2f2a | fe80::271:57ff:fe1b:2f2a | 00:00:15 | false  | true   |
 |________________|__________________________|__________|________|________|
r2#
r2#