Hello,
I'm trying to configure RPKI in BIRD 2.0.6. With the following
configuration:
```
200 roa4 table r4;
201 roa6 table r6;
202
203 protocol rpki gortr {
204 roa4 { table r4; };
205 roa6 { table r6; };
206
207 remote "rpki.neptunenetworks.org" port 8282;
208
209 retry keep 90;
210 refresh keep 900;
211 expire keep 172800;
212 }
```
I receive the following when loading the configuration:
```
bird> configure soft
Reading configuration from /etc/bird.conf
/etc/bird.conf:203:10 syntax error, unexpected CF_SYM_UNDEFINED
```
