Why when setting up ospf frr on debian do packets not go through the machine?

Question

Debian

I decided to look at the task with wsr and try to configure the frr package. I started with ospf and ran into some problems.
There are 3 machines L-SRV, L-FW and ISP
The server has statics configured with the following settings

auto ens33
iface ens33 inet static
    address 172.16.20.10/24
    gateway 172.16.20.1

statics on interfaces is configured on L-FW

auto ens33
iface ens33 inet static
    address 172.16.20.1/24
auto ens34
iface ens34 inet static
    address 10.10.10.1/24

in the file /etc/sysctl.conf I wrote net.ipv4.ip_froward = 1
cat /proc/sys/net/ipv4/ip_forward gives 1
on the machine I configured the FRR routing package
in the daemon file on ospfd set yes other daemons: no
via vtysh I wrote:

int lo
    ip add 3.3.3.3/32
router ospf
    ospf router-id 3.3.3.3
    network 10.10.10.0/24 area 0
    network 172.16.20.0/24 area 0
end
wr mem

On the machine, ISP configured statics on two interfaces and DHCP for Internet access:

auto ens33
iface ens33 inet dhcp

auto ens34
iface ens34 inet static
    address 10.10.10.10/24

auto ens35
iface ens35 inet static
    address 20.20.20.10/24

in the file /etc/sysctl.conf I wrote net.ipv4.ip_froward = 1
cat /proc/sys/net/ipv4/ip_forward gives 1
similarly to the previous machine configured frr ospf
also in the demons I wrote ospfd = yes and the rest: no
through vtysh I registered :

int lo
    ip add 100.100.100.100/32
router ospf
    ospf router-id 100.100.100.100
    network 10.10.10.0/24 area 0
    network 20.20.20.0/24 area 0
    network 192.168.134.0/24 area 0
end
wr mem

On both machines, show run produces identical output, except for addresses
In the L-FW logs, nothing is said about the neighbor 100.100.100.100
And in the ISP logs it says that it sees the neighbor 3.3.3.3
Ping from L-SRV until 20.20
. L-SRV to 192.168.134.2 (NAT gateway address in vmware) does not go
Ping from ISP to 192.168.134.2 goes
in the routing tables of ISP and L-FW there are entries about networks received through ospf
iptables are not there, and apparmor is disabled
I don’t even know what to see, traffic goes through L-FW, but not through ISP (
I’m sure it’s my stupidity that I didn’t see it somewhere, but still I ask for help.
Not a big digression, I'm not setting up bgp here, because I'm training to set up ospf via frr. I understand that there is Internet access and should be bgp.

Answer 1

the frr package did not find the frr package on the first two disks of the debian image. What disc contains this package?